REGULAR QUIZZES - REGULAR TOPIC 15 Acids & Bases SET E
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QUESTION 1. What is the pH of a 1.0 M solution of a weak monoprotic acid with a Ka = 1.0 x 10-5?

(A) 1.5
(B) 2.1
(C) 3.5
(D) 4.5
(E) 2.5

QUESTION 2. Which of the following salts was made from a reaction between potassium hydroxide and HCN?

(A) KCN
(B) KBr
(C) KC
(D) KN
(E) KI

QUESTION 3. What is the pH of a 1.2 x 10-3M soultion of a soluble group III hydroxide? (pH + pOH = 14)

(A) 2.44
(B) 11.56
(C) 2.92
(D) 11.08
(E) None of the above

QUESTION 4. What is the pH of a solution made up of 50.0 g of methanoic acid (HCOOH) in 500. mL of distilled water? (pKa for methanoic acid = 3.74)

(A) 1.70
(B) 3.74
(C) Cannot be calculated from the data given
(D) 0
(E) None of the above

QUESTION 5. Which indicator is suitable for finding a sharp end point when titrating a strong acid with a weak base?

(A) Phenolpthalein (range 9-11)
(B) Methyl Orange (range 5-6)
(C) Litmus (range 6-8)
(D) Any indicator
(E) None of the Above




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