Equilibrium Question 743

Question: Equal volumes of three acid solutions of pH 3, 4 and 5 are mixed in a vessel. What will be the H+ ion concentration

Options:

A) 3.7×103M

B) 1.11×103M

C) 1.11×104M

D) 3.7×104M

Show Answer

Answer:

Correct Answer: D

Solution:

[H+]=103M,[H+]=104M,[H+]=105M for the given acids. MmixVmix=M1V1+M2V2+M3V3

Mmix×3=103×1+104×1+105×1

Mmix=105[100+10+1]3=111×1053

=37×105M=3.7×104M



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