Question
Define the following terms :
- Ideal solution.
- Molarity $(M).$
✓
Answer
The solution which obey Roult's law over entire range of concentration are known as ideal solution.
For ideal solution: Enthalpy of mixing of the pure components to form the solution, $\triangle _{mix} H = 0$ and volume of mixing, $\triangle _{mix} V = 0$
$\text{Molarity (M)}=\frac{\text{Number of moles of solute}}{\text{ volume of solution in mL}}\times1000$
or
$\text{M} = \frac{\text{Weight of solute}}{\text{molar mass of solute}\times \text{Volume of solution in mL}}\times1000$
For ideal solution: Enthalpy of mixing of the pure components to form the solution, $\triangle _{mix} H = 0$ and volume of mixing, $\triangle _{mix} V = 0$
- Molarity:
$\text{Molarity (M)}=\frac{\text{Number of moles of solute}}{\text{ volume of solution in mL}}\times1000$
or
$\text{M} = \frac{\text{Weight of solute}}{\text{molar mass of solute}\times \text{Volume of solution in mL}}\times1000$
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