A. 0.010 mol/dm3
B. 0.020 mol/dm3
C. 0.100 mol/dm3
D. 0.150 mol/dm3
Correct Answer:
Option B = 0.020 mol/dm3
Explanation
CaVa/CbVb = Na/Nb
(0.01 X 20) / (Cb X 20) = 1/2
cross multiply → Cb = (0.01 X 20 X 2)/(20 X 1)
Cb = 0.02 mol/dm3
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