InterviewSolution
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InterviewSolution
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Hydrolic acid solution A and B have concentration of 0.5 N and 0.1N respectively. The volume of solutions A and B required to make 2 litres of 0.2 N hydrochloric areA. 0.5 L of A + 1.5 L of BB. 1.5 L of A + 0.5 L of BC. 1.0 L of A + 1.0 L of BD. 0.75 L of A + 1.25 L of B |
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Answer» Correct Answer - A Let volume of A = xL Volume of B = (2-x)L `because M_(1)V_(1)+M_(2)V_(2)=M(V_(1)+V_(2))` `rArr 0.5x +0.1(2-x)=0.2(x+2-x)` (`because` for HCl, 0.1 M HCl = 0.1 N HCl) `rArr 0.5 x + 0.2 =0.4 rArr 0.4 x = 0.2` `therefore x =(0.2)/(0.4)=0.5 L` Since x = 0.5 L (vol. of A), then 2 - x = 2 - 0.5 = 1.5 L (Vol. of B). |
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