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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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If 0.10 M aqueous solutions are prepared of each of the following acids, which produces the solution with the highest pH?
A.) hydrocyanic acid, Ka = 4.0 X 10-10
B.) benzoic acid, Ka = 6.3 X 10-5
C.) hydrogen sulfite ion, Ka = 6.2 X 10-8
D.) formic acid, Ka = 1.8 X 10-4
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- You have 1.00 L of 0.10-M formic acid, HCOOH, whose Ka = 3.0 x 10-4. You want to bubble into the formic acid solution sufficient HCl gas to decrease the pH of the formic acid solution by 1.0 pH unit. Calculate the volume of HCl (liters) that must be used at STP to bring about the desired change in pH. Assume no volume change has occurred in the solution due to the addition of HCl gas.arrow_forwardAn aqueous solution contains 0.397 M ammonia. Calculate the pH of the solution after the addition of 4.63 x 10-2 moles of perchloric acid to 250 mL of this solution. (Assume the volume does not change upon adding perchloric acid). Ka = 5.6 x 10-10, Kb = 1.80 x 10-5arrow_forwardA certain weak base has a Kp of 8.60 x 10-7. what concentration of this base will produce a pH of 10.37? concentration: Marrow_forward
- 19. Consider the weak acid phenol (C6H5OH), for which Ka = 1.05 ×10-10 in aqueous solutions at 25°C. What is the pH of a 0.850 M aqueous phenol solution at 25°C? A) 4.02 B) 5.02 C) 8.95 D) 9.98 E) none of thesearrow_forwardOrder the acids based on their strengths, with the weakest on the left and strongest on the right. HCIO - Hypochlorous acid Ka = 3.0 x 10-8 NH3 - Ammonia Kb = 1.8 x 10-5 HCI - hydrochloric acids Ka = 1.3 x 106 H2S - Hydrogen sulfide Ka = 1.1 x 10-7 NaOH - Sodium hydroxide Kb= 6.3 x 10-1 HSO4- - Hydrogen sulfate ion Ka = 1x 10-2arrow_forwardFind the pH of a 0.337 M aqueous solution of hydrofluoric acid (HF), for which Ka = 6.8 × 10-4.arrow_forward
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