Question

The volumes of and required to make 1 litre of are.

• 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 (e) 0.50 litre of 4 N HCl and 0.50 litre of 10 N HCl

Answer 1

Answer: (C)

0.67 litre of 4 N HCl and 0.33 litre of 10 N HCl

Answer 2

$N _ { 1 } V _ { 1 } + N _ { 2 } V _ { 2 } = N V$

$4 x + 10 ( 1 - x ) = 6 \times 1$; $- 6 x = - 4$ ; $x = 0.66$