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A 0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 5.0 ´ 10-4 M. What is the equilibrium constant...Asked by wite2khin
0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 5.0 * 10^-4 M. What is the equilibrium constant, Ka, for this acid?
a. 5.0 *10^-2
b. 5.0 * 10^-3
c. 2.5 * 10^-4
d. 2.5 * 10^-5
e. 2.5 * 10^-6
2. (Points: 1)
What is the carbonate-ion, CO3^-2, concentration in a 0.037 M carbonic acid solution?
a. 1.2 ´ 10^-4
b. 4.2 ´ 10^-7
c. 7.6 ´ 10^-8
d. 4.8 ´ 10^-11
e. 5.2 ´ 10^-19
a. 5.0 *10^-2
b. 5.0 * 10^-3
c. 2.5 * 10^-4
d. 2.5 * 10^-5
e. 2.5 * 10^-6
2. (Points: 1)
What is the carbonate-ion, CO3^-2, concentration in a 0.037 M carbonic acid solution?
a. 1.2 ´ 10^-4
b. 4.2 ´ 10^-7
c. 7.6 ´ 10^-8
d. 4.8 ´ 10^-11
e. 5.2 ´ 10^-19
Answers
Answered by
james
1. c
2. a
2. a
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