The table provides details of the solubility of four solids, P, Q, R and S. A student tried to separate mixtures containing these solids by using this procedure. 1. Place the mixture in a beaker of water and stir it. 2. Filter the mixture. 3. Crystallise one of the solids from the filtrate. Which of the following mixtures could not be separated using this procedure?
- Aa mixture of P and R
- Ba mixture of Q and P
- Ca mixture of Q and R
- Da mixture of R and S