kaitoufion

Thanks very much!! ^^

At least I know which area I am look for

Recently I've done an experiment and we are required to determine the percentage NH3 in the complex by mass.

I had no problem doing the experiment but stuck in the calculation part

The experiment was done by titration, the complex we used is... (CuSO4*5H2O + H2O + NH3 + ethanol + acetone) - sorry I don't know how I should call this @.@ But those are the things we used to make that complex...

First I dissolved 0.2g of the complex with 25mL H2O, & 31.05mL of standardized 0.1M HCl was used to titrate it. Then we are required to find "%NH3"......

Can someone please kindly tell me (at least the formula that I need to use) to calculate the percentage NH3???? :'(

Thanks so much!!!

Oh Thank you so much~!!

That's great help!

Oh i c i c~~

Thanks chuinhen!

Can someone tell me what's the difference in their Ionic Equations between:

Thanks!

I got this question from my Chem lab:

Al(NO3)3 + Na2CO3 -> white precipitates

White precipitate + HNO3 -> bubbles & precipitates dissolved

Can someone kindly tell me what does the Ionic Equation for the above actions would look like??? Because I'm having difficulties in writing its Ionic Equations >.<

Thank you so much!

Hello,

I just finished a Chemistry lab and now I need to write up a report which I am having some difficulties:-( I really hope you guys can help me out here coz it's duing tomorrow :'(

Experiment 1: H2O2 + H2SO4 + KMnO4 -> little bubbles (no change in colour)

Then I'm required to write down its equations which is set out like this:

Oxidation:

Reduction:

Overall:

Can someone please tell me how to write the equations in this format please???

Experiment 2: H2O2 + KMnO4 -> bubbles & brown precipitate

Again I'm required to write down the equations in the above format:-( Can someone help me here please???

THANK YOU SO MUCH!!! >.<