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: c) N

Answer 1

Answer on Question #49144 - Chemistry - Other

Question

A 100 ml solution contains 4.7g MgCl₂ (MM=94). The density of the solution is 1.03g/ml. Express the concentration of the solution in: c) N

Answer:

Equivalent molar mass of MgCl₂ is:

$$M_{\mathrm{eq}} = M / 2 = 94 / 2 = 47 \ \mathrm{g\text{-}eq/mol}$$

Normal concentration of magnesium chloride is:

$$C_N = \frac{m}{M_{\mathrm{eq}} V} = \frac{4.7 \cdot 1000}{47 \cdot 100} = 1 \ N$$

Answer: 1 N

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