The volume of 6 N and 2N HCl required to prepare 100 mL of 5N HCl is

Options

A. 0.75 litre of 10 N HCl and 0.25 litre of 4 N HCl
B. 0.25 litre of 4 N HCl and 0.75 litre of 10 N HCl
C. 0.67 litre of 4 N HCl and 0.33 litre of 10 N HCl
D. 0.80 litre of 4 N HCl and 0.20 litre of 10 N HCl

Answer

C

Explanation

`N_(1)V_(1)+N_(2)V_(2)=NV`
`4x+10(1-x)=6xx1,-6x=-4,x=0.66`.