Question

30. Differentiate between an exothermic reaction and an endothermic reaction. Write one example for each one
of these reactions in the form of balanced chemical equation.
2. In the following chemical reaction 'zinc oxide reacts with carbon to produce zinc metal and and sabor​

Answer 1

Answer; ZnO+C⇒Zn+Co

Explanation:

Exothermic Reaction

• A reaction in which heat is released  to surrounding is called exothermic reaction.
• the total energy of reactants is more than products
• Cao +H20 ⇒Ca(H2o)2 +heat

Endothermic reaction

• A reaction in  which heat is absorbed from surrounding is called endothermic reaction.
• The total energy of reactants is less than product.
• CaCO3 +heat ⇒CaO +CO2