Chemistry Forum

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?

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 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...

1) "... how to measure pH..." You could use pH testers. 2) Depending on the level of knowledge you are being tested for, "distilled water" may mean pH 7 or lower, say pH 5 - pH 6,5. 3) What is the pH of the solution that results when 10ml of 10^-5mol/l HCl is diluted to 10l with...

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 ...

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 ...