Question

you had to heat Caco3 strongly in order for it to decompose. this is an example of an endothermic reaction. what does this tell you about the energy stored in the reactants compared to the energy stored in the product? write the balanced equation for the decompostion of caco3 this time with the term "+ energy "on the appropriate side of the equation

Answer 1

Answer : The balanced decomposition reaction of
`CaCO_3` is:

`CaCO_3+Energy\rightarrow CaO+CO_2`

Explanation :

Endothermic reaction : It is defined as the chemical reaction in which the energy is absorbed from the surrounding.

In the endothermic reaction, the energy of reactant are less than the energy of product.

Exothermic reaction : It is defined as the chemical reaction in which the energy is released into the surrounding.

In the exothermic reaction, the energy of reactant are more than the energy of product.

Decomposition reaction : It is defined as the reaction in which the the larger molecule decomposes to give two or more smaller molecules.

It is represented as,

`XY\rightarrow X+Y`

The balanced decomposition reaction of
`CaCO_3` is:

`CaCO_3+Energy\rightarrow CaO+CO_2`

The decomposition reaction is an endothermic reaction in which energy is required during the reaction.

Hence, the balanced decomposition reaction of
`CaCO_3` is:

`CaCO_3+Energy\rightarrow CaO+CO_2`

Answer 2

Here's what I get

Step-by-step explanation:

1. Addition of heat

The energy stored in the reactant is less than the energy stored in the products.

We had to add heat energy so the reactant would convert to products.

2. Balanced equation

CaCO₃ + heat ⟶ CaO + CO₂