pH

Question 1

The pH of a solution decreases by 2.0. How does the hydronium ion concentration of the solution change?

Revolt · Accepted Answer

increases to 100 times the original concentration

Question 2

Which describes an alkaline solution?

Question 3

Note the pH and pOH values labeled with letters on the pH scale below.Based on log rules and the way pH is calculated, what is the difference in [OH– ] concentration between point A and point B.

Question 4

What is the equilibrium constant of pure water at 25°C?

Revolt · Accepted Answer

10–14

Question 5

What is the pH of a solution with [H+] = 1.25 10–10 M?Use .

Revolt · Accepted Answer

9.90

Question 6

Which statement about the self-ionization of water is correct?

Revolt · Accepted Answer

Two water molecules interact to form a hydronium ion and a hydroxide ion.

Question 7

Which statement best describes the pH of pure water?

Revolt · Accepted Answer

It is neutral because the concentration of hydronium ions equals that of hydroxide ions.

Question 8

The pH of a solution is 2.0. Which statement is correct?Useful formulas include , , , and .

Revolt · Accepted Answer

The pOH of the solution is 12.0.

Question 9

How can the pH of a solution be calculated if the pOH is known?

Revolt · Accepted Answer

by subtracting the pOH from 14

Question 10

Which describes an alkaline solution?

Revolt · Accepted Answer

basic

pH Answers

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