Question

A chemist needs 225 mL of 2.7 M HCl. What volume of 12 M HCl must be dissolved in water to form this solution?

Answer 1

The volume of 12 M HCl that must be dissolved in water to form this solution is 50.6 ml

Explanation:

According to the dilution law:

$M_1V_1=M_2V_2$

where,

$M_1$ = molarity of stock HCl solution = 12M

$V_1$ = volume of stock HCl solution = ?

$M_2$ = molarity of diluted HCl solution = 2.7 M

$V_2$ = volume of diluted HCl solution = 225 ml

Putting in the values, we get:

$12\times V_1=2.7\times 225$

$V_1=50.6ml$

Thus 50.6 ml of 12 M HCl must be dissolved in water to form this solution

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