Chemistry 0620 · IGCSE · Identification of ions and gases

Identification of ions and gases — practice question

Which reaction leads to a white-coloured substance?

  • Aadding water to anhydrous cobalt(II) chloride
  • Badding water to anhydrous copper(II) sulfate
  • Cheating hydrated cobalt(II) chloride
  • Dheating hydrated copper(II) sulfate

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