Chemistry 9701 · AS & A Level · Group 2

Group 2 — practice question

Substance X is added to water. A gas is released and the pH of the resulting solution rises. The solution is then treated with sulfuric acid, producing a white precipitate. What could substance X be?

Abarium
Bbarium oxide
Cmagnesium
Dmagnesium oxide

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

Full mark scheme, point by point
Step-by-step worked solution
Write your answer & get it marked instantly by AI