Question

A chemist needs 225 mL of 2.4 M HCl. What volume of 12 M HCl must be dissolved in water to form this solution?

Answer 1

Answer:

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

Answer 2

Answer:

Volume of 12 M HCl must be dissolved in water to form this solution is 45ml

Explanation:

Given that,

Volume of HCL chemist needs=225ml

Molarity of HCL chemist needs=2.4M

Concentration of HCL dissolved in water=12M

Volume of HCL dissolved in water=?

According to law of molarity,product of molarity and volume is constant.Therefore

$M _{1}V _{1} =M _{2}V _{2}$

By substituting the given values,we get the following

$2.4 \times 225 = 12V _{2} \\ V _{2} = \frac{2.4 \times 225}{12} = 45ml$

Therefore,volume of 12 M HCl must be dissolved in water to form this solution is 45ml

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