Chapter 16 Quiz

Chapter 16 Quiz - Chemistry 1B Chapter 16 Worksheet- Daley

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Unformatted text preview: Chemistry 1B Chapter 16 Worksheet- Daley Name___________________________________ 1) The conjugate base of HSO 4- is A) H 2 SO 4 B) SO 4 2- C) H 3 SO 4 + D) OH- E) HSO 4 + 2) The conjugate acid of HSO 4- is A) H 2 SO 4 B) H + C) HSO 3 + D) SO 4 2- E) HSO 4 + 3) Calculate the concentration (in M) of hydronium ions in a solution at 25.0 °C with a pOH of 4.223. A) 5.98 × 10- 5 B) 1.67 × 10- 10 C) 5.99 × 10- 19 D) 1.00 × 10- 7 E) 1.67 × 10 4 4) What is the pH of a 0.0150 M aqueous solution of barium hydroxide? A) 1.82 B) 1.52 C) 12.2 D) 10.4 E) 12.5 5) The pH of a 0.55 M aqueous solution of hypobromous acid, HBrO, at 25.0 °C is 4.48. What is the value of K a for HBrO? A) 1.1 × 10- 9 B) 2.0 × 10- 9 C) 6.0 × 10- 5 D) 3.3 × 10- 5 E) 3.0 × 10 4 6) The K a of hypochlorous acid (HClO) is 3.00 × 10- 8 . What is the pH at 25.0 °C of an aqueous solution that is 0.0200 M in HClO? A) + 2.45 B)- 2.45 C)- 9.22 D) + 9.22 E) + 4.61 7) The acid- dissociation constants of phosphoric acid (H 3 PO 4 ) are K a1 = 7.5 × 10- 3 , K a2 = 6.2 × 10- 8 , and K a3 = 4.2 × 10- 13 at 25.0 °C. What is the pH of a 2.5 M aqueous solution of phosphoric acid? A) 1.8 B) 2.5 C) 0.40 D) 0.13 E) 0.87 1 Chemistry 1B Chapter 16 Worksheet- Daley 8) Calculate the pH of a 0.500 M aqueous solution of NH 3 . The K b of NH 3 is 1.77 × 10- 5 . A) 8.95 B) 5.05 C) 11.5 D) 3.01 E) 2.52 9) Determine the pH of a 0.35 M aqueous solution of CH 3 NH 2 (methylamine). The K b of methylamine is 4.4 × 10- 4 ....
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This note was uploaded on 02/23/2012 for the course CHEM AP taught by Professor Hx during the Fall '11 term at Manitoba.

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Chapter 16 Quiz - Chemistry 1B Chapter 16 Worksheet- Daley

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