Q25 of 28 Page 14

Egg shells are dropped into HCl acid. What is the balanced chemical equation?

We know that egg shells are made of calcium carbonate, i.e., CaCO3. When egg shells are dropped into hydrochloric acid, it gives calcium chloride, carbon dioxide gas, and water.

The balanced chemical equation for the reaction is:


CaCO3 + 2HCl → CaCl2 + CO2 + H2O


More from this chapter

All 28 →
23

(a) How chloride of lime chemically differs from calcium chloride? (b) What happens when chloride of lime reacts with sulphuric acid? Write the chemical equation involved. (c) Mention two uses of chloride of lime.

 24

Write a balanced chemical equation for the reactions that take place during respiration. Identify the type of combination reaction that takes place during this process and justify the name. Give one more example of this type of reaction.

 26

State what happens when zinc granules are heated with sodium hydroxide solution. Write the balanced chemical equation for the reaction. Name the main product formed in this reaction.

 27

Name and state the law which is kept in mind while we balance a chemical equation.