Question

1.What happens when limestone is heated strongly?What type of reaction is this?
2. What happens when an aqueous solution of barium chloride is mixed with an aqueous​

Answer 1

Answer:

Decomposition takes place when limestone is heated strongly. This reaction helps in forming calcium oxide (CaO) and carbon dioxide (CO2).  Calcium oxide + carbon dioxide This process is known as decomposition.

Explanation:

When an aqueous solution of sodium sulphate reacts with an aqueous solution of barium chloride, precipitate of barium sulphate is formed and following reaction takes place. ii. If reactants are in solid state, then reaction will not take place. ... It is a double displacement as well as a precipitation reaction.

Answer 2

CaCo3 is known as lime stone.

When CaCo3 is strongly heated then following reaction take place.....

CaCo3+O2---------CaO+CO2

this is decomposition reaction..also an exothermic reaction.

here, CaO is called quick lime .CO2 turns it milky during reaction. CaO is also used to make cement.