Answer: 15.3 ml of water is to be added to 7.1 M solution.
Explanation:
The relationship between specific gravity and density of a substance is given as:
Specific gravity of = 1.18
Density of water =
Putting values in above equation we get:
Given : 37 g of HCl is present in 100 g of solution
Volume of concentrated HCl solution=
According to the dilution law,
where,
= molarity of stock solution = ?
= molarity of diluted solution= 6.0 M
= volume of stock solution = 84.7 ml
= volume of diluted solution =
Therefore, the concentration of stock solution is 7.1 M
Mass of
To prepare 7.1 M solution , we need to add 21.9 g of HCl to 84.7 ml of water.
To prepare of 6.0 M HCl from a concentrated solution , (100-84.7) = 15.3 ml of water is to be added to 7.1 M solution.