Question

a student adds dilute sulphuric acid to lime water will the reaction mixture became hot or cold. why

Answer 1

it will become hot because acid+ base releases heat energy

Answer 2

The reaction mixture will become hot.

explanation

When dilute sulphuric acid is added to lime water (calcium hydroxide), calcium sulphate is formed. Also, heat is released in the process and so the reaction mixture becomes hot. Following is the chemical equation showing the reaction

H2SO4 + Ca(OH)2 ----------> CaSO4 + H2O