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CHEM AND BIO HELP AND TIPS HERE
IG4ever:
thank u angel and yes it did help
nid404:
Thanks angel :)
Ok...I found this ppt off the net....make good use of it
sarasa:
I have a doubt ??? in Chemistry which is about this question:
The formula of an acid is either of the type HY or H2Y.How could u find out which one is correct by using aqueous solutions of acids and alkalis. Assume that both solutions have da same concentration of 0.1 mol/dm3.
I understand that we need to carry out titration and find out the volume of acid used and that if the volume of acid is same as da alkali then it is HY but wat I don't understand is why if it is H2Y then it is twice da alkali (mark scheme) I thought it is HALF!PLZ explain :-\
nid404:
--- Quote from: sarasa on April 25, 2010, 02:44:56 pm ---I have a doubt ??? in Chemistry which is about this question:
The formula of an acid is either of the type HY or H2Y.How could u find out which one is correct by using aqueous solutions of acids and alkalis. Assume that both solutions have da same concentration of 0.1 mol/dm3.
I understand that we need to carry out titration and find out the volume of acid used and that if the volume of acid is same as da alkali then it is HY but wat I don't understand is why if it is H2Y then it is twice da alkali (mark scheme) I thought it is HALF!PLZ explain :-\
--- End quote ---
Give me a sample question...it'll be easier for me to explain
sarasa:
Ok, If for example we used 25 cm3 of NaOH with concentration 0.1 mol/dm3 and it was neutralised by H2SO4 of concentration of 0.1 mol/dm3 then what is the volume of H2SO4 needed?
Repeat this with HCl having same concentration and also find its volume!!!!!!!
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