An excess of MgO is mixed by shaking with water. The mixture produced is then filtered into test-tube P. An excess of BaO is mixed by shaking with water. The mixture produced is then filtered into test-tube Q. Which oxide reacts more quickly with water, and which filtrate has the lower pH?
- Aoxide reacts more readily with water: BaO; test-tube with filtrate of lower pH: P
- Boxide reacts more readily with water: BaO; test-tube with filtrate of lower pH: Q
- Coxide reacts more readily with water: MgO; test-tube with filtrate of lower pH: P
- Doxide reacts more readily with water: MgO; test-tube with filtrate of lower pH: Q