Question

hello everyone pls answer this question fast

Chemistry class11 chapter1

A bottle contains 500 ml of 2.4M HCl
How much volume of water should be added to dilute it to 1.6 M solution

And pls don't give useless answer plsss help

Answer 1

Initial solution contains 1.2 mol HCl (2.4 * 0.5) 
adding water : 1.6 mol /l 
1.6 = 1.2/ V
---->
V = 1.2 / 1.6
= 0.75 l =
750 ml 
we have to add 750 - 500 = 250 ml water