Ammonia has a pH of 11.0 and baking soda has a pH of 8.0.?

Question

 Calculate the hydronium ion concentration for both substances and determine how many times more basic ammonia is than the baking soda.

Answer 1

[H3O+] = 10^-11.0 M for ammonia

[H3O+] = 10^-8.0 M for baking soda

(10^-8.0 M) / (10^-11.0 M) = 1000 times

or

10^(11.0 - 8.0) = 1000 times