the pH of a solution is 5.00. Which of the following is TRUE about the solution?

Question

a) its [H3O+} is 1.0 x 10^5 M
b) its [H3O+] is 1.0 X 10^-5 M
c) its [H3O+] is 1.0 x 10^9 M
d) it is more acidic than a solution whose pH is 4.00
e) none of the above

Answer 1

B

[H3O+] = 10^-pH = 10^-5

Answer 2

b) is true since pH=log1/[H3O+]

so 5 = log1/[H3O+] = -log [H3O+]

[H3O+] = 10^-5

Answer 3

it's B