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Question
Three solutions of HCl having normality 12 N, 6 N and 2 N are mixed to obtain a solution of 4 N normality. Which among the following volume ratio is correct for above three components ?
Options
A.1 : 2 : 6
B.2 : 1 : 9
C.1 : 2 : 4
D.1 : 1 : 5
Solution
N1V1 + N2V2 + N3V3 = N(V1 + V2 + V3)
12 × 1 + 6 × 2 + 2 × 6 = N(9)
N = 4
12 × 1 + 6 × 2 + 2 × 6 = N(9)
N = 4
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