key2(2) - CHEM 1212 Test II Multiple Choice (3 points) 1....

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CHEM 1212 Test II Multiple Choice (3 points) 1. Acids that ionize extensively in solution are referred to as a) dissociators. b) weak electrolytes. c) Arrhenius acids. d) Brønsted-Lowry acids. e) strong acids. 2. Which of the following is never a Brønsted-Lowry base in an aqueous solution? a) hydrogen bromide, HBr(g) b) sodium dihydrogen phosphate, NaH 2 PO 4 (s) c) sodium phosphate, Na 3 PO 4 (s) d) ammonia, NH 3 (g) e) sodium bicarbonate, NaHCO 3 (s) 3. In the following reaction HF(aq) + HPO 4 2- (aq) ' F - (aq) + H 2 PO 4 - (aq) a) HF is an acid and F - is its conjugate base. b) HF is an acid and HPO 4 2- is its conjugate base. c) HPO 4 2- is an acid and H 2 PO 4 - is its conjugate base. d) H 2 PO 4 - is an acid and F - is its conjugate base. e) HPO 4 2- is an acid and HF is its conjugate base. 4. The conjugate acid of HSO 4 - is ____. a) OH - b) SO 4 2- c) H 2 SO 4 d) H 2 O e) H 3 O + 5. What is the H 3 O + concentration of an aqueous solution with a pH of 12.17? a) 6.8 × 10 -13 M b) 1.9 × 10 -9 M c) 5.2 × 10 -6 M d) 1.5 × 10 -2 M e) 1.1 M 6. Which of the following chemical equations corresponds to the base ionization constant, K b , for nitrite ion (NO 2 - )? a) HNO 2 (aq) + H 2 O( l ) ' NO 2 - (aq) + H 3 O + (aq) b) NO 2 - (aq) + H 2 O(l) ' HNO 2 (aq) + OH - (aq) c) HNO 2 (aq) + OH - (aq) ' NO 2 - (aq) + H 2 O( l ) d) NO 2 - (aq) + OH - (aq) ' HNO 3 2- (aq) e) NO 2 - (aq) + H 3 O + (aq) ' HNO 2 (aq) + H 2 O( l )
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7. Assuming equal initial concentrations of the given species, which of the following is the strongest acid in an aqueous solution? a) benzoic acid,
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key2(2) - CHEM 1212 Test II Multiple Choice (3 points) 1....

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