When 25ml of 0.30m solution is diluted to 50 m l , the new concentration is:

0.10m
0.60m
0.15m
0.30m

0.15M

Explanation:

The expression used will be :

where,

= concentration of stock solution = 0.30 M

= concentration of dilute solution = ?

= volume of stock solution = 25 ml

= volume of dilute solution= 50 ml

Now put all the given values in the above law, we get :

By solving the terms, we get :

Therefore, the concentration of new solution will be 0.15 M.

the answer is barium and copper bromide