- 34 35 The Following Questions Refer To A Solution That Contains 1 00 M Hydrofluoric Acid Hf K 7 2 X 10 4 And 3 0 1 (23.77 KiB) Viewed 58 times
34-35. The following questions refer to a solution that contains 1.00 M hydrofluoric acid, HF (K. = 7.2 x 10-4), and 3.0
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34-35. The following questions refer to a solution that contains 1.00 M hydrofluoric acid, HF (K. = 7.2 x 10-4), and 3.0
34-35. The following questions refer to a solution that contains 1.00 M hydrofluoric acid, HF (K. = 7.2 x 10-4), and 3.00 M hydrocyanic acid, HCN (K, -6.2 x 10-10). 34. What is the pH of this mixture of weak acids? a) 0.00 b) 1.57 c) 3.14 d) 4.37 e) 9.21 ANS: b) 1.57 PAGE: 14.5 35. Determine the [CN-) at equilibrium a) 4.31 x 10-'M b) 4.28 x 10-7M c) 6.9 x 10-8M d) 6.2 x 10-10 M e) none of these ANS: c) 6.9 x 10-$M PAGE: 14.5 X
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