A slightly soluble salt has the formula A3B5 and a Ksp of 3.3E-26. What is pB in a solution of this salt?
回答 (1)
2020-10-26 12:36 pm
A3B5(s) <--> 3 A5+ + 5 B3-
Ksp = [A5+]^3 [B3-]^5 = 3.3X10^-26
Let x = solubility of A3B5. Then, [A5+] = 3x and [B3-] = 5x
Ksp = (3x)^3 (5x)^5 = 84375x^8 = 3.3X10^-26
x = 1.6X10^-4
[B3-] = 5x = 7.9X10^-4
pB = 3.10
Ksp = [A5+]^3 [B3-]^5 = 3.3X10^-26
Let x = solubility of A3B5. Then, [A5+] = 3x and [B3-] = 5x
Ksp = (3x)^3 (5x)^5 = 84375x^8 = 3.3X10^-26
x = 1.6X10^-4
[B3-] = 5x = 7.9X10^-4
pB = 3.10
收錄日期: 2021-04-24 08:11:24
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