Answer to Question #341166 in General Chemistry for fifii

Question

The pH of an acid solution is 3. It may be all of the following solutions except. A: 10─3 M HCl solution. B: 10─3 M CH3COOH solution. C: 10─3 M HNO3 solution. D: 10─3 M HBr solution. E: 5 x10─4 M H2SO4 solution.

Answer 1

B . CH₃COOH it is a weak acid. It does not dissociate completely, so the concentration of H⁺ ions will not be equal to 10^-3. and therefore the pH will not be equal to 3.