Question
Define the following terms :
- Ideal solution.
- Molarity (M).
✓
Answer
- solution:
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, Δmix H = 0 and volume of mixing, Δmix V = 0
- Molarity:
It is defined as the number of moles of solute present in 1000 mL of the solution. Molarity is represented by M.
$\text{Molarity (M)}=\frac{\text{Number of moles of solute}}{\text{ volume of solution in mL}}\times1000$
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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