Chapter 10

Write down the apparatus you would need to carry out the following operations, giving your reasons: (a) Separation of a mixture of soil and water to allow you to measure the nitrate content of the soil. Remember, nitrates are water soluble. (b) Isolation of solid, water insoluble Nphenylethanamide from the reaction mixture which comprises \(N\)-phenylethanamide and very dilute ethanoic acid. (c) Removal of anti-bumping granules from a solution of \(N\)-phenylethanamide in hot water. (d) Heating a suspension of \(N\)-phenylethanamide in cold water so as to dissolve it for recrystallisation. (e) Heating a solution in toluene (b.pt. \(111^{\circ} \mathrm{C}\), flammable). (f) Cooling a reaction mixture to \(-10^{\circ} \mathrm{C}\).