Chemistry 5070 · O Level · Identification of ions and gases

Identification of ions and gases — practice question

When a solution of sodium carbonate was added to tap water, a white precipitate appeared. Which ion in the tap water was responsible for this precipitate forming?

Achloride
Bmagnesium
Cpotassium
Dsulfate

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