Question

Explain the similarity and different in two events , namely adding NaOH to water and adding CaO to water.​

Answer 1

Similarity: Both events are exothermic

Difference: NaOH in water

1. No chemical reaction takes place
2. an aqueous solution is formed

Adding CaOH in water

1. A chemical reaction takes place
2. The following reaction takes place

CaO + H2O ----> Ca(OH)2 + heat

Answer 2

$\large \bold{ \red{Similarities: - }}$ Both event are exothermic

$\large \bold{ \orange{Difference : - }}$ NaOH in water.

• No chemical reaction takes place
• An aqueous solution is formed

$\large \bold{ \pink{Adding: - }}$ CaOH in water

• A chemical reaction takes place
• The following reaction takes place

CaO + H2O ———» Ca(OH)2 + heat.