pH

Question 1

A substance with a high pOH would likely have which of the following?

Revolt · Accepted Answer

A high [H+ ] and a low pH

Question 2

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

Revolt · Accepted Answer

10–14

Question 3

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

Revolt · Accepted Answer

a low [OH– ] and a high pOH

Question 4

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

Revolt · Accepted Answer

by subtracting the pOH from 14

Question 5

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 6

Which of these correctly defines the pH of a solution?

Revolt · Accepted Answer

the negative log of the hydronium ion concentration

Question 7

Which would most likely be the pH of a highly-corrosive acid?

Revolt · Accepted Answer

1

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

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.

Question 10

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.

pH Answers

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