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Exam 14: Acids and Bases

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Question 1

Multiple Choice

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Which of the following statements about water are TRUE?

A) Water can act as an acid.
B) Water can act as a base.
C) The conjugate base of water is OH^-.
D) The conjugate acid of water is H₃O⁺.
E) All of the above are true.

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Question 2

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What is the concentration of H⁺ in a solution with pH = 2.50?

A) 4.5 M
B) 1.3 M
C) 0.0032 M
D) 0.40 M
E) none of the above

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Question 3

True/False

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The burning of fossil fuels produces nitrogen oxides and sulfur oxides which can react to form acid rain (nitric and sulfuric acids).

A solution at 25°C has a hydrogen ion concentration of 2.6 × 10^-5 M.Which of the following is TRUE?

Which of the following statements are TRUE of buffer solutions? 1.A buffer solution can be made by mixing equal concentrations of Acetic acid and sodium acetate. 2.A buffer solution can be made by mixing equal concentrations of Hydrochloric acid and sodium chloride. 3.A buffer solution resists changes in pH when small quantities of acid Or base are added.

The products of a neutralization reaction are carbon dioxide and water.

Bases feel slippery.

In general,the stronger the acid,the weaker is its conjugate base.

A strong acid must also be a strong electrolyte.

The ion product constant for water (K_w)is best stated as K_w = [H₂O] [H⁺].

A solution with a concentration of 0.000 000 1 M HCl would be an acidic solution.

Bases have a bitter taste.

The conjugate base to HSO₄^- is SO₄^2-.

The titration of 25.00 mL a 0.125 M HClO₄ solution required 21.37 mL of KOH to reach the endpoint.What is the concentration of the KOH?

Which of the following is NOT an acid-base conjugate pair?

Water always acts as an acid in reactions.

The Arrhenius definition of an acid is:

Bases feel slippery because they react with oils on your skin to form soap-like substances.

What is the concentration of the hydroxide ion given that the concentration of the hydronium ion is ?

Carboxylic acids can be found in: