Explain why :
(a) Respiration is na exothermic reaction.
(b) When blue salt of copper sulphate is heated, it becomes colourless.

What happens when hydrate copper sulphate is heated ?

(a) Explain why : respiration is an exothermic reaction (b) A colourless lead salt when heated produces a yellow residuces a yellow residue and brown fumes. (i) Name the lead salt (ii) Name the brown fumes (iii) What the chemical equation for the reaction involved ?

Why is respiration considered an exothermic reaction? Explain.

A blue coloured salt of copper sulphate becomes white on heating. Give reason.