Balance the given equations by inserting the appropriate coefficients.

chemical equation: p+0— p,0g

chemical equation: c, h+0, — co, +,0

Answer :

(1) The balanced chemical reaction will be,

(2) The balanced chemical reaction will be,

Explanation:

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

Part 1 :

The given unbalanced chemical reaction is,

This reaction is an unbalanced chemical reaction because in this reaction number of phosphorous and oxygen atoms are not balanced.

In order to balance the chemical equation, the coefficient '2' put before the and the coefficient '5' put before the then we get the balanced chemical equation.

The balanced chemical reaction will be,

Part 2 :

The given unbalanced chemical reaction is,

This reaction is an unbalanced chemical reaction because in this reaction number of carbon , hydrogen and oxygen atoms are not balanced.

In order to balance the chemical equation, the coefficient '2' put before the , the coefficient '7' put before the , the coefficient '4' put before the and the coefficient '6' put before the then we get the balanced chemical equation.

The balanced chemical reaction will be,

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form() .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.