AnswersCrowley Original Credit Chemistry BArrhenius, Bronsted-Lowry, and Lewis Acids and Bases

pH Answers

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5

pOH = 4.0

Answer:

4

8

Which of these statements best explains why pure water has a pH of 7?

A
Pure water contains only H2O molecules, but pH is based on the concentration of H3O+ ions.
B
Each molecule of water can dissociate to form 7 H3O+ ions.
C
Water self-ionizes to form an equilibrium system that has [H3O+] = 1.0 × 10–7 M.
12

Which of these solutions has the highest concentration of H+?

A
solution A, pH = 12.5
B
solution B, pH = 7.0
C
solution C, pH = 2.5
13

What is the pOH of this solution?

A
0.00500
B
5.00
C
2.30
D
–2.30
14

What is the pH of the solution?

A
0.00500
B
11.7
C
14.0
D
11.0
20

n =

Answer:

-5

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