Question

1. If the pH of a solution is ….. the solution is basic. a. 2 b. 5 c. 7 d. 10 Can someone help me?

Answer 1

d. 10

Explanation:

The definition of a ‘basic’ solution is one with a pH more than 7.0. An ‘acidic’ solution is one with a pH less than 7.0.
This is because the pH scale is built on the auto-dissociation of water:
`[H_2O] → [H^+] + [OH^1]` where `pH = -log[H^+]`,
with a maximum of 14 and a minimum of 1.
The neutral point, where `[H^+] = [OH^1]` is 7. Anything lower means that there are more `[H^+]` than `[OH^1]` ions, so the solution is acidic. Anything lower means that there are more `[OH^1]` than `[H^+]` ions, so the solution is basic.