What volume of 12 N hcl and 3N hcl must be mixed to get 6N hcl?
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Suppose that the volume of 12 HCl (V1) = x L
So, Volume of 3N HCl required to make 1L of 6N HCl (V2) = (1-x) L
Let us take M1 = 12N and M2 = 3N,
We know that, Molarity of a mixture equation :
(N1V1 + N2V2) / (V1 + V2) = N3
[12x + 3(1-x)] / 1 = 6
12x - 3x + 3 = 6
9x = 3 = 1/3= 0.33 L
Therefore, Volume of 12N HCl = 0.33L and Volume of 3N HCl = 1-0.33 = 0.67 L
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