Air, soil, oil and water mixture, ethyl alcohol and water mixture, sugar solution, vinegar 3. Fama tested the solubility of four substances at different temperatures and found in grams of each substance tiswived in $100\mathrm{g}$ of water to form a saturated solution. Now, answer the following questions:

1. Which substance is the least soluble at $293\mathrm{K}$ ?
2. Which substance shows the maximum change in its solubility when the temperature is raised from $293\mathrm{K}$ to $313\mathrm{K}$ ?
3. Find the amount of ammonium chloride that will separate out when $55\mathrm{g}$ of its solution at $333\mathrm{K}$ is cooled to $293\mathrm{K}$ ?
4. Whit is the effect of temperature on the solubility of a salt?
5. What mass of sodium chloride would be needed to make a saturated solution in $10\mathrm{g}$ of water at $293\mathrm{K}$ ?
6. Name the separation techique used to separate the constituents of the mixture of miscible liquids. Draw a labelled diagram of the process of separating a mixture of acetone and water.
7. List two properties of the mixture of miscible liquids essential for the process.
8. A simple frictionating column is provided with beads. Give reasons.