Write the four changes which help us to determine whether a chemical reaction has taken place or not.
Important Questions on Chemical Reactions and Equations
Identify the following change is exothermic or endothermic in nature?
Dilution of sulphuric acid.
Identify the following change is exothermic or endothermic in nature?
Dissolution of sodium hydroxide in water.
Identify the following change is exothermic or endothermic in nature?
Dissolution of ammonium chloride in water.
Translate the given statement, first in word-equation and then into the skeletal equation and balance stepwise.
An aqueous solution of sodium hydroxide reacts with aqueous sulphuric acid to form an aqueous solution of sodium sulphate and water.
Translate the given statement, first in word-equation and then into the skeletal equation and balance stepwise.
When an aqueous solution of sodium hydroxide is added into ferric sulphate solution, a brown precipitate of ferric hydroxide is formed along with sodium sulphate in the solution.
Write balanced chemical equation for the reaction that take place during respiration. Identify the type of combination reaction that takes place during this process and justify the name. Give one more example of this type of reaction.
Identify the type of the following reaction:
A reaction in which a single product is formed from two or more reactants.
Identify the type of the following reaction:
The reaction mixture becomes warm.
