Question

explain why.. The acid solution HNO3 with the concentration of 0.1M, its [H+] will be 0.1M while the acid solution CH3COOH with the concentration of 0.1M, its[H+] will be much lower than 0.1M.

Answer 1

one of those is a strong acid, one of them is a weak acid

Answer 2

yep nitric acid is a strong acid, this means it fully dissociates into ions in water. So you have this reaction: \(HNO_3\Rightarrow H^++~NO_3^-\)
It's a strong acid so every HNO3 molecules yields 1 H+ ion

Now CH3COOH (acetic acid) does not fully dissociates into ions. Some of it will but not all so it's a weak acid. This reaction occurs: \(CH_3COOH\Rightarrow CH_3COO^- + H^+\)
So not all CH3COOH molecules will yield a H+ ion. This means 0.1M CH3COOH does not yield 0.1M H+, but 0.1M HNO3 will yield 0.1M H+

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Answer 3

The reactions actually are: (i forgot to add the water in the equation :P)
\(HNO_3+H_2O\Rightarrow H_3O^++~NO_3^-\)
\(CH_3COOH +H_2O\Rightarrow CH_3COO^- + H_3O^+\)