Question

A 100 ml solution contains 4.7g MgCI (MM=94).The density of the solution is 1.03g/ml.Express the consentration of the solution in: b) M

Answer 1

Answer on Question #49193, Chemistry, Other

**Task:**

A 100 ml solution contains 4.7 g MgCl (M=94 g/mol). The density of the solution is 1.03 g/ml. Express the concentration of the solution in: b) M

**Answer:**

$$\begin{array}{l} C_{M} (MgCl) = \frac{\nu (MgCl)}{V (MgCl)} \\ \nu (MgCl) = \frac{m (MgCl)}{M (MgCl)} = \frac{4.7}{94} = 0.05 \text{ mol} \\ C_{M} (MgCl) = \frac{0.05}{0.1} = 0.5 M \\ \end{array}$$

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