8) When 0.500 mol of CH3COOH is combined with enough water to make a 300.0 mL so
ID: 874918 • Letter: 8
Question
8) When 0.500 mol of CH3COOH is combined with enough water to make a 300.0 mL solution, the concentration of CH3COOH is __________ M.
A) 3.33 B) 1.67 C) 0.835 D) 0.150
9) In a titration of 35.00 mL of 0.737 M H2SO4, __________ mL of a 0.827 M KOH solution is required for neutralization.
A) 39.3 B) 25.8 C) 62.4 D) 35.0
10) A 31.5 mL aliquot of HNO3 of unknown concentration was titrated with 0.0134 M NaOH. It took 23.9 mL of the base to reach the endpoint of the titration. The concentration (M) of the acid was __________.
A) 1.02 B) 0.0102 C) 0.0204 D) 0.227
11) How many grams of NaCl are there in 55.0 mL of a 1.90 M aqueous solution of NaCl?
A) 6.11 B) 3.21 C) 12.2 D) 0.105
12) What is the concentration (M) of a NaCl solution prepared by dissolving 9.3 g of NaCl in sufficient water to give 350 mL of solution?
A) 0.16 B) 0.45 C) 27 D) 18
13) An aqueous ethanol solution (400 mL) was diluted to 4.00 L, giving a concentration of 0.0400 M. The concentration of the original solution was __________ M.
A) 4.00 B) 0.200 C) 0.400 D) 2.00
14) How many moles of Co2+ are present in 0.200 L of a 0.400 M solution of CoI2?
A) 0.0400 B) 0.0800 C) 0.500 D) 0.160
15) What are the respective concentrations (M) of Na+ and SO42- afforded by dissolving 0.500 mol 15) Na2SO4 in water and diluting to 1.33 L?
A) 0.665 and 1.33 B) 0.665 and 0.665 C) 0.752 and 0.376 D) 1.33 and 0.665
16) The balanced molecular equation for complete neutralization of H2SO4 by KOH in aqueous 1solution is __________.
A) H2SO4 (aq) + 2 KOH (aq) 2 H2O (l) + K2SO4 (s)
B) H2SO4 (aq) + 2 KOH (aq) 2 H2O (l) + K2SO4 (aq)
C) 2H+ (aq) + 2 KOH (aq) 2 H2O (l) + 2 K+ (aq)
D) H2SO4 (aq) + 2 OH- (aq) 2 H2O (l) + SO42- (aq)
17) Which of the following is insoluble in water at 25
Explanation / Answer
8. b
9. C
10. B
11. D
12. B
13. C
14. B
15. C
16. B
17. A C D
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