I never thought about this question until my lab manual asked it. Because I was having an experiment and use the H2SO4 to disslove the FeSO4 and use titration to calculate the moles of the unknown FeSO4. I think it has something to do with the SO4(2-) thing because they both have it. Tell me if it is ringt or wrong. Futhermore, the lab manual asked for two explaination. Please DO tell me where the data you refrence or cited. Monash university is really stric about it. Thank you!!!
By the way, am I considered plagirism or cheating if I ask homework like this?
2007-08-23 04:14:45 · 3 answers · asked by chen wei neng 1 in Science & Mathematics ➔ Chemistry
I presume that the titration involves the reaction :
8 H2SO4 + 2 KMnO4 + 10 FeSO4 >>
2 MnSO4 + 5 Fe(SO4)3+ K2SO4 + 8H2O
As you know H2SO4 is an acid and it dissolves FeSO4
The titration occurs in acidic ambient
2007-08-23 04:37:17 · answer #1 · answered by Dr.A 7 · 0⤊ 0⤋
FeSO4 is an ionic salt and can dissolve in aqueous media. It will dissolve in dilute H2SO4. The H2SO4 is necessary to prevent precipitation of Fe(OH)3 as FeSO4 undergoes hydrolysis in soln. and is oxidised to the more stable Fe3+.
Yes, asking questions like this is cheating.
2007-08-23 04:30:54 · answer #2 · answered by ag_iitkgp 7 · 0⤊ 0⤋
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check some analytical chemistry texts assaying ores is a big deal in those and they have methods of dissolving the strangest stuff in this case, I think you are on to something, I'd bet on hot, conc sulfuric acid doing the trick (done in a hood with all appropriate safety precautions)
2016-04-03 22:10:11 · answer #3 · answered by Anonymous · 0⤊ 0⤋