Question

Calculate the molar H3O+ ion concentration of a solution that has a pH of 5.31.

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1 point
4.9 × 10–5 M
4.9 × 10–4 M
9.4 × 10–5 M
non of all

Answer 1

[AI-generated answer — Bot GPT 3.5]

To calculate the molar H3O+ ion concentration from the pH, you can use the formula:

pH = -log[H3O+]

Given that the pH is 5.31, you can rearrange the formula to solve for [H3O+] by taking the antilog of both sides:

[H3O+] = 10^(-pH)

[H3O+] = 10^(-5.31)
[H3O+] = 4.9 x 10^(-6) M

Therefore, the molar H3O+ ion concentration of the solution is 4.9 x 10^(-6) M or 4.9 x 10^(-5) M. So, the closest answer choice is 4.9 x 10^(-5) M.