28. K, (Alloxanic acid) = 2.3 x 10 and K, (HF) = 6.8 x 104. Consider the following two aqueous mixtures: Solution (1): mixing 50.0 mL each of 0.25-M Alloxanic acid and 0.25-M NAOH. Solution (2): mixing 50.0 mL each of 0.25-M HF and 0.25-M NAOH. Part 1. Which of the above mixtures does have a higher pH after the solutions reach equilibrium? b) Solution (2) c) same pH for both solutions d) insufficient information. a) Solution (1) Part 2. Which of the above two mixtures in Part 1 does have pH > 7 at equilibrium? a) Solution (1) b) Solution (2) c) both solutions d) neither of the two solutions

28. K, (Alloxanic acid) = 2.3 x 10 and K, (HF) = 6.8 x 104. Consider the following two aqueous mixtures: Solution (1): mixing 50.0 mL each of 0.25-M Alloxanic acid and 0.25-M NAOH. Solution (2): mixing 50.0 mL each of 0.25-M HF and 0.25-M NAOH. Part 1. Which of the above mixtures does have a higher pH after the solutions reach equilibrium? b) Solution (2) c) same pH for both solutions d) insufficient information. a) Solution (1) Part 2. Which of the above two mixtures in Part 1 does have pH > 7 at equilibrium? a) Solution (1) b) Solution (2) c) both solutions d) neither of the two solutions

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

%3D
28. K, (Alloxanic acid) = 2.3 x 107 and Ka (HF) = 6.8 x 10ª. Consider the following two aqueous mixtures:
%3D
Solution (1): mixing 50.0 mL each of 0.25-M Alloxanic acid and 0.25-M NaOH.
Solution (2): mixing 50.0 mL each of 0.25-M HF and 0.25-M NAOH.
Part 1. Which of the above mixtures does have a higher pH after the solutions reach equilibrium?
b) Solution (2)
c) same pH for both solutions
d) insufficient information.
a) Solution (1)
Part 2. Which of the above two mixtures in Part 1 does have pH > 7 at equilibrium?
a) Solution (1)
b) Solution (2)
c) both solutions
d) neither of the two solutions

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