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BS Nursing (BSN) Quiz 2 2017, Questions And Answers

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Pontifical and Royal University of Santo Tomas, The Catholic University of the Philippines

BS Nursing (BSN)

Quiz 2 2017, questions and answers

Chemistry 2
Quiz 2: Acid and Base Equilibria
I. Multiple Choice
1) According to the Arrhenius concept, an acid is a substance that ________.
A) is capable of donating one or more H+
B) causes an increase in the concentration of H+ in aqueous solutions
C) can accept a pair of electrons to form a coordinate covalent bond
D) reacts with the solvent to form the cation formed by autoionization of that solvent
2) A Bronsted-Lowry base is defined as a substance that ________.
A) increases [H+] when placed in H2O
B) decreases [H+] when placed in H2O
C) increases [OH-] when placed in H2O
D) acts as a proton acceptor
3) A Bronsted-Lowry acid is defined as a substance that ________.
A) increases Ka when placed in H2O
B) decreases [H+] when placed in H2O
C) increases [OH-] when placed in H2O
D) acts as a proton donor
4) Which one of the following is a Bronsted-Lowry acid?
A) (CH3)3NH+
B) CH3COOH
C) HF
D) all of the above
5) A substance that is capable of acting as both an acid and as a base is ________.
A) autosomal
B) conjugated
C) amphiprotic
D) saturated
6) Which one of the following is a Bronsted-Lowry base?
A) (CH3)3N
B) CH3COOH
C) HF
D) HNO2
7) The molar concentration of hydronium ion in pure water at 25 °C is ________.
A) 0.00
B) 1.0 × 10-7
C) 1.0 × 10-14
D) 1.00
8) The molar concentration of hydroxide ion in pure water at 25 °C is ________.
A) 1.00
B) 0.00
C) 1.0 × 10-14
D) 1.0 × 10-7
9) The magnitude of Kw indicates that ________.
A) water autoionizes very slowly
B) water autoionizes very quickly
C) water autoionizes only to a very small extent
D) the autoionization of water is exothermic
10) Which one of the following statements regarding Kw is false?
A) pKw is 14.00 at 25 °C.
B) The value of Kw is always 1.0 × 10-14.
C) Kw changes with temperature.
D) The value of Kw shows that water is a weak acid.

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BS Nursing (BSN) Quiz 2 2017, Questions And Answers

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