In the electrolysis of 200ml of 0.15mol/l CuSO4 solution using platinum electrodes, 0.16g of oxygen gas evolved at the anode.
How many faradays of charge was passed through the solution?
Search found 6 matches
- Sun May 22, 2016 8:51 am
- Forum: Chemistry forum
- Topic: Charge and molarity left after electrolysis
- Replies: 0
- Views: 5751
- Sun May 22, 2016 8:16 am
- Forum: Chemistry forum
- Topic: Molecular weight?
- Replies: 0
- Views: 11937
Molecular weight?
A kind of fatty acid was obtained by hydrolysis of some oil and fat. For hydrolysis of 0.884 of the oil and fat, 15ml of 0.2mol/l aqueous solution of NaOH was required.
What is the molecular weight of the oil and fat?
What is the molecular weight of the fatty acid?
What is the molecular weight of the oil and fat?
What is the molecular weight of the fatty acid?
- Fri May 20, 2016 3:59 am
- Forum: Chemistry forum
- Topic: pH of a diluted with distilled water
- Replies: 4
- Views: 5516
Re: pH, diluted acids
"...what do we do..." I guess, first we to thank people for helping us: "благодарÑ!" )) Second, CH3COOH is a weak acid, therefore you, pls look for "acid ionization constant Ka" (should be provided). Third, H2SO4 - even "worse" )), as it dissociates i...
- Tue May 17, 2016 7:13 am
- Forum: Chemistry forum
- Topic: pH of a diluted with distilled water
- Replies: 4
- Views: 5516
- Fri May 13, 2016 3:26 am
- Forum: Chemistry forum
- Topic: Parts per million?
- Replies: 1
- Views: 5548
Parts per million?
A 40l sample of N2 gas containing SO2 gas as an impurity was bubbled through a 3% solution of H2O2 . The SO2 was converted to H2SO4 : SO2 + H2O2 = H2SO4 A 25ml portion of 0.0100mol/l NaOH was added to the solution, and the excess base was back-titrated with 13.6ml of 0.0100mol/l HCl . Calculate the ...
- Fri May 13, 2016 3:17 am
- Forum: Chemistry forum
- Topic: pH of a diluted with distilled water
- Replies: 4
- Views: 5516
pH of a diluted with distilled water
Hi! This is my first post here so I am sorry if I am not doing something right. My question is how to measure pH of a solution that results when a substance is diluted with distilled water. Here in Bulgaria I don't remember solving such problems in the chemistry class in school but I need it for an ...