Question

A solution is prepared by dissolving 4.40 g of KSCN in enough water to make 250 mL of solution. What is the concentration of the solution?

Answer 1

Question #58738, Chemistry / Inorganic Chemistry

A solution is prepared by dissolving 4.40 g of KSCN in enough water to make 250 mL of solution. What is the concentration of the solution?

Answer

$$\begin{array}{l} C_{M} = \frac{v}{V}; \\ v = \frac{m}{Mr} = \frac{4.4}{97} = 0.045 \text{ mole} \\ C_{M} = \frac{0.045 \text{ mole}}{0.25 L} = 0.18 \text{ mole}/L \\ \end{array}$$

The concentration of the solution is 0.18 mole/L or 0.18 M

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