Question

Coefficient of sulphuric acid and ferric sulphate in the balanced equation of above reaction are and respectively
$KMn{O_4} + {H_2}S{O_4} + FeS{O_4} \to {K_2}S{O_4} + MnS{O_4} + F{e_2}{(S{O_4})_3} + {H_2}O$
(A) $8,4$
(B) $5,8$
(C) $4,3$
(D) $8,5$

Answer 1

A chemical reaction in which the number of atoms of reactant react with each other to form products. The number of atoms in the reactant side is equal to the product side in a balanced chemical reaction.

Complete step by step answer:
According to law of conservation of mass- The number of atoms in the reactant side must be equal to the product side in a chemical reaction.
A stoichiometric coefficient may be defined as the total number of molecules that participate in chemical reaction. The coefficient in a balanced chemical reaction must be in whole number ratio.
For balancing chemical reaction – Step 1 – write reactants and products.
Step-2 find one atom that occurs only in one substance on both sides.
Step-3 finds a coefficient to balance this atom.
The balanced chemical reaction is:
$2KMn{O_4} + 8{H_2}S{O_4} + 10FeS{O_4} \to {K_2}S{O_4} + 2MnS{O_4} + 5F{e_2}{(S{O_4})_3} + 8{H_2}O$
Hence option D is the correct option.

Additional information: The molecular formula of Potassium permanganate is $KMn{O_4}$ and is mainly used as oxidising agent it means help to reduction in other compounds and behave as oxidising agent.
$KMn{O_4}$ is a salt formed by reaction between acid and base so $KMn{O_4}$neither behaves as acid or base. And it behaves as crystalline solid and black in colour.
$KMn{O_4}$ is mainly used as an oxidising agent in the lab.

Note:
Potassium permanganate has no odour and dissolves in polar molecules like water and ethanol because it forms hydrogen bonds in polar molecules.
The boiling point of $KMn{O_4}$ is ${100^O}C$ and the melting point of $KMn{O_4}$ is ${240^O}C$, density of $KMn{O_4}$ is $2.7g/c{m^3}$
Potassium permanganate is also used in qualitative analysis in inorganic chemistry and is used in bleaching agents so it is used as a pesticide.