(a) What is a chemical equation ? Explain with the help of an example.
(b) Giving examples, state the difference between balanced and unbalanced chemical equations.
(c) Balance the following chemical equations :
(i) NH3 ⟶ N2 + H2
(ii) C + CO2 ⟶ CO
(a) What is a chemical equation ? Explain with the help of an example.
(b) Giving examples, state the difference between balanced and unbalanced chemical equations.
(c) Balance the following chemical equations :
(i) NH3 ⟶ N2 + H2
(ii) C + CO2 ⟶ CO
(a)
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
Eg.
(b)
A chemical equation in which the numbers of atoms of each element are same on both the reactant and product sides is said to be a Balanced Chemical equation.
e.g. N2(g)+3H2(g)⟶2NH3(g)
Nitrogen Hydrogen Ammonia
There are two nitrogen atoms and six hydrogen atoms on both the reactants and products’ side.
On the other hand, a chemical equation in which the number of atoms of each elements are not same on both the reactant and product side is said to be unbalanced chemically.
e.g. N2(g)+H2(g)⟶NH3(g)
There are two nitrogen and two hydrogen atoms on reactant’s side and one nitrogen and three hydrogen atoms on product’s side.
(c)
(i)
Balance the number of N atom on both sides, then the number of H atoms. We get,
(ii)
Balance the number of O atoms, we get the balanced equation.
(a)
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
Eg.
(b)
A chemical equation in which the numbers of atoms of each element are same on both the reactant and product sides is said to be a Balanced Chemical equation.
e.g. N2(g)+3H2(g)⟶2NH3(g)
Nitrogen Hydrogen Ammonia
There are two nitrogen atoms and six hydrogen atoms on both the reactants and products’ side.
On the other hand, a chemical equation in which the number of atoms of each elements are not same on both the reactant and product side is said to be unbalanced chemically.
e.g. N2(g)+H2(g)⟶NH3(g)
There are two nitrogen and two hydrogen atoms on reactant’s side and one nitrogen and three hydrogen atoms on product’s side.
(c)
(i)
Balance the number of N atom on both sides, then the number of H atoms. We get,
(ii)
Balance the number of O atoms, we get the balanced equation.
