Chapter 1: Chemical reactions and equations

Q&A -Ask Doubts and Get Answers

Q
Chemical reactions and equations

Question:

Write a balanced chemical equation with state symbols for the following reactions

(i) Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.

(ii) Sodium hydroxide solution (in water) reacts with a hydrochloric acid solution (in water) to produce sodium chloride solution and water.

Answer:

Solution:

(i) When an aqueous solution of barium chloride reacts with sodium sulphate, insoluble barium sulphate will form along with the aqueous solution of sodium chloride.

The chemical equation for this reaction is written as:

BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + NaCl (aq)

The number of atoms of different elements present in the given unbalanced equation is as follows:

First balance chlorine by multiply 2 in the product side and 2 in the product side as shown below:

BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2 NaCl (aq)

The number of atoms of different elements present in the given balanced equation is as follows:

Therefore, the correct answer is BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2 NaCl (aq).

 

(ii) When an aqueous solution of sodium hydroxide reacts with an aqueous solution of hydrochloric acid, an aqueous solution of sodium chloride will form along with water.

The chemical equation for this reaction is written as:

NaOH (aq) + HCl (aq) → NaCl (aq) + H2O (l)

The number of atoms of different elements present in the given unbalanced equation is as follows:

Therefore, the correct answer is NaOH (aq) + HCl (aq) → NaCl (aq) + H2O (l).


Related Questions for Study

What our students and parents say about us!

Choose EduSakshamยฎ
Embrace Better Learning

edusaksham-mobile-app