smhjn17

Is mild white turbidity a positive result for iodoform test in a sample suspected to contain ethanol??

Also shouldnt glucose n other sugars also show positive for test for alcoholic group....what bt iodoform test with glucose ?

You may add copper wire to hydrogen peroxide and add hcl ull get cucl2

Then for cuo.. Electrolyse nacl solution with copper electrodes and filter out the ppt obtained(cu(oh)2 and cu2o) ....heat this ppt for long until u obtain black cuo

Are u making vinegar from banana

Arent we talking here about electrolysis of salt water ie nacl with cu electrodes....im not talking abt tap water...my voltage is 9 volts

For sure this is the color of cu2o but depending upon the size of the lattice...the color can even be yellow or green even( as observed in a benedicts test)...

And the solution turned yellow just due to the suspended particles of cu2o while the electrolysis goes on....

What i observed was that more of yellow cu2o was produced than cu(oh)2 and black cuo was never produced(being in water cu(oh)2 cant dehydrate)

At first even i was surprised and thought that the the electrode is an alloy...but then i tried with pure copper strip ..the results were same

Ya...initially cu2+ appears as blue green cu(oh)2 and then gradually yellow green brown oxide of cu1+ forms....the results were quite fascinating

Infact the whole solution gets yellow in a while due to cu2o

Will prussian blue i.e. ferric ferrocyanide be decolorized by hcl ?

Is mild white turbidity a positive result for iodoform test in a sample suspected to contain ethanol??

Also shouldnt glucose n other sugars also show positive for test for alcoholic group....what bt iodoform test with glucose ?

Are there any commercial products rich in phosphate like in medicines or some food or any other thing

U may go for khan academy ...the vedios explain biochemical pathways quite well

Thnk u so much for the suggestions...

This is for a science event at some school....ill be doing this at thr level of my school lab

Nd the link is only a reference

Idont want to quantify it but just show the presence of cyanide ion qualitatively....

But yes i want to be safe and precautious thats why im finding the safest way....

Im really determined.....and picric acid is available in my school lab

Wat bt this....http://mv.picse.net/alkoloids/almonds/test-for-hydrogen-cyanide-in-almonds/

I think this is safe

Im working for a project wherein i want to show the presence of cyanide in apricot kernels or bitter almond

Test for cn- will be dn once i get cn- ,

I need some help regarding how must i go about hydrolysing the amygdalin to get cn-,....iv seen methods like using sulphuric acid and then picric acid.....

Will i get good results and how ???

Also cyanide will be produced in dissolved state or gas?

A similar thing happened with me ....did u use copper electrodes,if yes then probably its a cu+1 compound which is red brown

Hmmm right , as far as water vapor is concerned it is gaseous ..so basically mixture of gases....thnk u

Iv seen somewhere "water vapor in air" as an example of a liquid dissolved in a gaseous solvent...isnt this wrong as vapor is gas?....so it should be gas in gas

What is the general principle of reaction chemistry?

Is it justifying observed reactions theoritically or

Predicting the mechanism of reaction in theory and matching with the experimental reaction....

For instance...reaction of flourine with water

One way to work this out is by analysing the bonds and intermediates theoritically to find d products and then matching with the one that occurs in experiment

Other is to carry out d reaction practically and analyze the products and thereafter justifying why the reaction takes place that way