hypervalent_iodine

33 minutes ago, monolog said:

Hi. I think my posts are limited to 5 daily, that's why I didn't reply. Yes, I did read it. As hypervalent_iodine says, I'm lacking too much fundamental knowledge. De-synced communication won't really help me right now. Thanks for your time anyway. I do appreciate you putting in the effort.

You are right. I think I need a private tutor to help me at this point. I did find, however, a very helpful video which I believe will help me answer (b) and (c). Here it is: 

I thing I can solve the problem now. It does address the exact same problem, doesn't it?
Anyway, thank you very much for your time. I will keep this forum in mind, and also your recommendations. Best regards.

I don’t have time to watch the whole video, but my guess from the title that it does answer most of it except perhaps b, which is where you need the HH equation. If you know how to use the HH equation, then you’ll know the two values you need to determine are [HA] and [A-]. Do you know which species those correspond to in your question? Do you know how to work them out with the information you are given?

Just now, JessicaP said:

Thank you for your time. I need to understand the solubility in water. I saw that the logP is 2.03 and thus my molecule is not soluble in water. However the solubility graph on chemicalize tells the opposite.

It doesn’t mean it isn’t soluble in water, it just means it has a higher preference towards the organic phase (usually octanol). Again, it’s entirely pH dependant. You may want to look up some verified data via Reaxys or SciFinder. 

A brief look suggests that the solubility isn’t actually that high at all, about 0.55 g/L, but this would be pH dependant and I’m not sure if my value was of the neutral form or not. 

4 hours ago, DrP said:

Except that the comment was under his breath and turned away and never meant for any one to hear  -  they picked it up on camera and used lip readers and strung it out in the press for days.  Meanwhile - what the press did not cover, a man had died of starvation on the steps of parliament again as a result of government cuts and austerity. They did a fine job of covering that up by screaming blue murder about a total non incident to distract. Whatever. Roll on brexit and the Trump wars then...  no one cares about them as long as they are all PC about it.  

Why do you think anyone would call you a stupid man? I, personally, have never heard the term 'stupid woman'...  not directed at me anyway.  I still don't see the crime in using the language to indicate whether you are talking about a man or a woman. I agree it shouldn't or doesn't matter - but in our language we make the distinction - it is just language. We can change it - but don't shoot people that use it until it has been officially changed and accepted and learnt by all.

 

If you care to read back, you’ll see I already responded to this exact criticism from you on page one.

On 21/12/2018 at 1:31 AM, hypervalent_iodine said:

 

I am talking about the phrase generally, since that is where the bulk of your questions were aimed at. I don’t live in the UK, and I have not looked at anything surrounding the issue you are referring to specifically. My question is why use the word woman in the first place? If it isn’t used to emphasise the initial insult (as it almost always is when that phrase is used), why use it at all? 

By my experience, I wasn’t talking about the comments I have had levelled at me. I was talking about how I use the phrase, how people around me use the phrase, and how you might see it used in media, on TV, etc. I disagree that “stupid man,” is as commonly used as, “stupid woman,” based on that. 

I agree that it is not always helpful to immediately vilify someone as sexist or a misogynist in cases like these, but only if it was the result of a lack of awareness. I also believe firmly in the power of apology, and that no one should be held eternally and irreversibly accountable for their mistakes. The way we use language matters, and it’s consequences are pervasive. It is important to have these discussions so that people might learn, and so the issues become embedded in society’s comprehension of the world we live in. 

2 hours ago, monolog said:

No, I am not familiar with it. I'll look it up now.
I do have literature given by the university, but with all of the classes' assignments piling up I didn't have time to study it. Acid-base equilibrium, titration, energy reactions, entropy, and Gibbs energy are the subjects I have fallen behind on. In order to succeed in this assignment I need to go straight to the point (I'll go through the whole semester later in preparation for the exam).

What do I need to focus on in order to answer these questions? Can you give me a step by step guide?

Thanks in advance.

This is the equation, right?

How does this: NaOH + CH3COOH → CH3COONa + H2O, translate into values in the equation? What does [A^-] and [HA] stand for?
 

[HA] is shorthand used to represent an acid, and [A-] is its conjugate base form. Do you know how to write equilibrium expressions, and can you give one for the dissociation of acetic acid? Are you familiar with ICE tables or how to write out equilibrium expressions and how to use those plus the K_a/b values to calculate pH?

At the moment it sounds like you are missing a lot of fundamental knowledge, and certainly too much to explain over a forum such as this. I can’t really give a step by step guide in this case, since it appears that you need an entire module’s worth of information given to you. You are better off studying this from the resources you already have had provided to you, and coming here with specific queries if something isn’t making sense. I realise this isn’t what it want, but it’s the best I can offer short of simply doing the work for you (which we do not do here).

1 hour ago, studiot said:

Describing the H-H equation and its use was the main point of the lecture I posted.

I am unsure of your point. I did not download the file, and felt it more appropriate to ask the relevant questions here in the thread. You also asked about reaction kinetics, which is largely unrelated to the question. 

Are you familiar with the Henderson Hasselbach equation at all?

I have used carboxylic acids with Cs₂CO₃ plus alkyl iodides before with some success, but I think the acid chloride / halide route is better if you can manage it.

24 minutes ago, iNow said:

It’s sort of damned if you damned if you don’t, but I suspect this would’ve been even worse.

She’d have been pilloried has she shown weakness and misogynists across the world would have declared her a women too weak to run the country.

“How can she govern when she’s so easily distressed by words from members of parliament?”

Even women who support her would’ve likely been upset if she did this for it would play into the weak woman stereotype. 

I mean, not necessarily. Former Australian PM Julia Gillard’s misogyny speech comes to mind here. Granted, Corbyn and Tony Abbott are by no means the same brand of politician, so perhaps it have been more difficult to come down so strongly. Still, Gillard’s speech and the overwhelmingly positive global reactions it received in the aftermath at least demonstrates that it is possible to stand against these comments as a leader in parliament and not be railed against for being weak. 

Stupid boy, as with stupid girl, is more in reference to age. Again, it is used to underscore the original insult. Which once again brings us back to stupid woman, and the contextual implications of it being gendered. I am not familiar with the use of stupid man as an insult at all, at least where I live. 

2 minutes ago, DrP said:

I'm OK with it  -  if you want to remove gender from language then I don't care  -  but you have to let everyone know about it and get them all to agree.

?  well as I said  -  if you want to remove gender from language then that's fine....  but it hasn't been removed, so the word 'woman' gets used to donate that you are talking about someone who is female. Why you would make the distinction between male and female I do not know  -  I am sure many have their own reasons. Sometimes for clarity - like in this sense when there is a man AND a woman before you the use of the word man or woman can distinguish which one you are referring too.  Is this sexist too now?

You misinterpreted what I was saying. I didn’t mean “at all,” in the sense of, don’t use the word woman ever. I meant why did he have to gender the insult that he used? 

5 minutes ago, zapatos said:

I don't think we can say if it was sexist or not, because we don't know his intent or history (at least I don't). I often comment 'that guy's an idiot', or 'that woman's an idiot'. It is just an identifier. For me, anyway. Was it just an identifier for him, or was he degrading women in general? How could we possibly know based on so little information?

I think that is a little different in the way it’s used, though. In that case it is simply an identifier, and I would class it as generally innocuous. You aren’t using identifiers to add to the insult, you are just identifying them. I don’t think the same is true here, but perhaps I am wrong. 

On 21/12/2018 at 1:11 AM, DrP said:

Is that what happened in parliament yesterday? Was he mocking her with a direct accusation of stupidity, emphasising the word 'woman' using it as if it was an insult?... or commenting to his friend in private (as sideways whisper for his ears only) that he thought the person was stupid?   Her gender has no bearing on her intellect at all...  as I said above I though what he said was childish...  to suggest a woman who has risen through the ranks to take the most powerful political position in the country is 'stupid' is 'stupid' in it's own right...  she would HAVE to be pretty good to reach the position and to be voted into that position by her peers.  I think he was probably just releasing some frustration at her lack of understanding or wilful dismissal of his argument.

 

That would be because you are a woman.  So if someone called you stupid they would call you a stupid woman. If they called ME stupid they would use the phrase 'stupid man'.  I regret to say that I have been on the receiving end of that statement and it was probably deserved. ...  so in MY experience I don't really hear the phrase 'stupid woman'...  it's always 'stupid man'.  Is that sexist?  It is only sexist if you consider using gender in language to distinguish between the sexes sexist. Maybe that is - but that is the language we have and used correctly. If you want that changed then you have to change the language - not attack those that use it correctly.

I've said it before   -  you jump on people like this and you are preaching to the choir  -  this is why we have Brexit and Trump....  because we aren't allowed to discuss things for fear of upsetting the PC brigade - so they don't get discussed and peoples shit views come out at the polling stations. Better have the discussion in public and educate the people who hold their racist and misogynistic views to the fact that they are holding biases and prejudices or whatever - rather than jumping on them and shutting them up so they slink off and continue to keep their views private and vote accordingly in the ballot boxes. Now they have won (the brexit vote/trump pres) they are over the moon and feel justified in holding their views once again.  Keep shutting them up and scolding them school teacher style and they will go underground again, never to be seen until next polling day.  

 

 

I am talking about the phrase generally, since that is where the bulk of your questions were aimed at. I don’t live in the UK, and I have not looked at anything surrounding the issue you are referring to specifically. My question is why use the word woman in the first place? If it isn’t used to emphasise the initial insult (as it almost always is when that phrase is used), why use it at all? 

By my experience, I wasn’t talking about the comments I have had levelled at me. I was talking about how I use the phrase, how people around me use the phrase, and how you might see it used in media, on TV, etc. I disagree that “stupid man,” is as commonly used as, “stupid woman,” based on that. 

I agree that it is not always helpful to immediately vilify someone as sexist or a misogynist in cases like these, but only if it was the result of a lack of awareness. I also believe firmly in the power of apology, and that no one should be held eternally and irreversibly accountable for their mistakes. The way we use language matters, and it’s consequences are pervasive. It is important to have these discussions so that people might learn, and so the issues become embedded in society’s comprehension of the world we live in. 

I can see where you are coming from, but I would counter that such a bland interpretation ignores a lot of the nuance around how the expression is used. In most common examples I can think of, the word proceeding “stupid,” is typically something to underscore the insult and really put across just how stupid someone it. Stupid boy, stupid girl, stupid idiot, etc etc. In my experience, you don’t really hear people use “stupid man,” as an insult all that much. You do hear, “stupid woman,”  quite a lot, relatively speaking. Within the context of an insult the use of, “woman,” is really not a statement of plain fact; it is used mockingly. That’s why it’s sexist. 

You are better off using Google scholar or similar to find this out. 

It depends on context really. If you can identify what an ingredient is doing in a dish, you can probably come up with a reasonable substitute. 

There is such a thing as egg substitute that works reasonably well in baking. Not sure what it’s made of though. 

Their previous post indicates that they have access, but I am not sure if it is administered as a walk-up or as a service operated by a technician. The latter would likely have longer wait times for results. Regardless, I think in the long run you end up wasting more time proceeding with a reaction if you don’t actually know for sure what is going into it. Depending on how precious this compound is and how complicated the reaction they’re doing is, you could probably get away with doing a test run on small scale and seeing how the reaction tolerates it. Even then, figuring out if it worked could be made more difficult by the added impurities, if the ‘sticky mass’ is even the compound they want and not just a decomposed mess, or something stemming from a bad synthesis. 

That is not a great attitude. NMR and MS really take very little time, assuming you have access to the facilities. Certainly a lot less compared to how long it may take you to redo your reaction if it doesn’t work out because you didn’t want to invest an hour or two in doing some very standard checks. Where has this sticky mass of yours come from? Did you make it? 

Also worth noting that some reactions tolerate impurities better than others, so I would again recommend that you at least figure out what’s in there first. Can I ask what you’re making?

I would suggest you do that so you can figure out what you have first. 

Have you run any NMR or GCMS? 

Is it meant to be a powder? Sometimes you just have to work with what you’ve got. It shouldn’t matter too much that it’s a sticky solid, unless the fact that it’s sticky is because it contains impurities. 

Could you elaborate? Is this the final product following work up? Deal with how?

20 minutes ago, DirtyChai said:

If you can state your occupation, then why not your gender?

If it's such a big deal, why not just have an "About Me" section only?

You’re the only one who seems to be making a big deal out of it. Personally I don’t see the point, but if letting people know your gender is important to you, you can always write it into your About Me section. 

Also, given the context of this site, occupation seems like a much more relevant / pertinent piece of information than your gender, wouldn’t you agree? The two categories hardly compare.

If I’ve pushed the right buttons - and I often do - the option to include gender should now be gone.