pH

Question 1

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 2

Which describes an alkaline solution?

Revolt · Accepted Answer

basic

Question 3

A solution containing HCl would likely have

Revolt · Accepted Answer

a low pH and a high pOH.

Question 4

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 5

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

Revolt · Accepted Answer

by subtracting the pOH from 14

Question 6

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

Revolt · Accepted Answer

10–14

Question 7

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

Revolt · Accepted Answer

9.90

Question 8

A substance with a high [H+ ] would likely have which additional characteristics?

Revolt · Accepted Answer

a low [OH– ] and a high pOH

Question 9

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 10

Based on the definition of logarithms, what is the difference in hydrogen ion concentration between a substance with a pH of 2 and a substance with a pH of 3?

Revolt · Accepted Answer

A substance with a pH of 2 has a 10 times higher concentration of H+ than a substance with a pH of 3.

pH Answers

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