Question

In the balanced chemical reaction $I{O_3}^ - + a{I^ - } + b{H^ + } \to c{H_2}O + d{I_2}$ . a, b, c and d respectively corresponds to:
A. 5,6,3,3
B. 5,3,6,3
C. 3,5,3,6
D. 5,6,5,5

Answer 1

Hint: In chemistry, compounds do react to form new products but they do so in specific proportions. Different proportions of reactions may lead to the formation of different products. Some laws govern the reaction and the proportions in which the compounds react and as a result, form a proportionate reaction.

Complete step by step answer:
Chemical reactions represent the chemical changes that happen in various elements. The chemical reaction is written to represent the way and proportions that the elements and compounds adopt for the formation of products.
These chemical reactions need to be balanced for the correct representation of proportions in which they react. Different proportions of the reactants provide different reactions and thus different products.
The reaction is balanced by adding the coefficient in which the reactants form and the products form. These coefficients represent the molar coefficient and the respective number of particles that take part in a particular reaction. The quantitative study for the representation of proportions of the reactants required and the products formed is known as stoichiometry. Using this concept we can determine the number of reactants that are needed for the preparation of the specific amount of product.
The above reaction can be balanced for the following manner to satisfy the molar coefficients of the compounds.
$I{O_3}^ - + 5{I^ - } + 6{H^ + } \to 3{H_2}O + 3{I_2}$
So from the above equation, we can get that the values of a, b, c, d are 5,6,3,3 respectively.

So, the correct answer is Option A.

Note: The amount of substance present in a compound may be represented in various ways like the mole percentage, molarity, molality, mole fraction etc.
There are various laws that given the coefficient of the chemical reactions like a law of multiple proportions, Gay Lussac’s law of gaseous volumes etc.