Arrhenius, Bronsted-Lowry, and Lewis Acids and Bases

Question 1

Identify each of these substances as acidic, basic, or neutral. pure water, pH = 7.0 lake water, pH = 6.5 baking soda solution, pH = 9 soapy water, pH = 12

Revolt · Accepted Answer

C: neutral

Question 2

Identify each of these substances as acidic, basic, or neutral. rainwater, pOH = 8.5 cola, pOH = 11 tomato juice, pOH = 10 liquid drain cleaner, pOH = 0

Revolt · Accepted Answer

Selection 1: acidic; Selection 2: acidic; Selection 3: acidic; Selection 4: basic

Question 3

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

Revolt · Accepted Answer

C: Water self-ionizes to form an equilibrium system that has [H3O+] = 1.0 × 10–7 M.

Question 4

Select the most acidic solution from these options. Select the most basic (alkaline) solution from these options. Select the least acidic solution from these options.

Revolt · Accepted Answer

Selection 1: solution B, pH = 1; Selection 2: solution C, pH = 13; Selection 3: solution A, pOH = 1

Question 5

What is the pH of a KOH solution that has [H+] = 1.87 × 10–13 M? Round to the nearest tenth. What is the pOH of a KOH solution that has [OH–] = 5.81 ×10–3M? Round to the nearest hundredth. What is the pH of a solution of NaCl that has [H+] = 1.00 × 10–7 M? Round to the nearest hundredth.

Revolt · Accepted Answer

Part 1: 12.7; Part 2: 2.24; Part 3: 7.00

Question 6

What is the hydronium ion concentration in a solution of HCl that has a pH of 4.65? Round to the nearest hundredth. × 10n M n = What is the hydroxide ion concentration in a solution of NH3 with a pOH of 4.65? Round to the nearest hundredth. × 10n M n =

Revolt · Accepted Answer

Part 1: 2.24; Part 2: -5; Part 3: 2.24; Part 4: -5

Question 7

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

Revolt · Accepted Answer

C: solution C, pH = 2.5

Question 8

What is the pOH of this solution?

Revolt · Accepted Answer

C: 2.30

Question 9

Question 9

Revolt · Accepted Answer

B

Question 10

[H3O+] = 3.16 × 10–4 M

Revolt · Accepted Answer

Part 1: 2; Part 2: 5; Part 3: 1; Part 4: 3; Part 5: 4

Arrhenius, Bronsted-Lowry, and Lewis Acids and Bases Answers

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