Multiple choice

When carbon dioxide is bubbled through limewater, a new substance is formed. Which of the following is the new substance?

  1. Calcium bicarbonate

  2. Calcium acetate

  3. Calcium gluconate

  4. Calcium hydroxide

  5. Calcium carbonate

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option. When carbon dioxide is bubbled through limewater, calcium carbonate is formed.

Ca(OH)2 + CO2 --> CaCO3 + H2O