Some Basic Concepts Of Chemistry Question 234
Question: Hydrochloric acid solutions A and B have concentration of 0.5 N and 0.1 N respectively. The volume of solutions A and B required to make 2 litres of 0.2 N hydrochloric are [KCET 1993]
Options:
A) 0.5 l of A + 1.5 l of B
B) 1.5 l of A + 0.5 l of B
C) 1.0 l of A + 1.0 l of B
D) 0.75 l of A + 1.25 l of B
Show Answer
Answer:
Correct Answer: A
Solution:
$ NV=N _1V _1+N _2V _2 $
$ 0.2\times 2=0.5x+0.1(2-x) $
$ 0.4=0.5x+0.2-0.1x $
$ 0.2=0.4x $
$ x=\frac{1}{2}L=0.5L $
