Question

Complete and balance the following equations:
 $ {\text{C + }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}({\text{conc}}{\text{.}}) \to $
 $ {\text{Xe}}{{\text{F}}_{\text{2}}}{\text{ + P}}{{\text{F}}_5} \to $ .

Answer 1

Hint: When the total number of atoms on both reactant and product side are equal and the total charge of both reactant and product side are equal then this chemical equation is known as balanced chemical equation.

Complete step by step answer:
Balanced chemical equation: A balanced chemical equation for a chemical reaction is an equation which has the same number of atoms of every element on both reactant and product side and the total charge remains the same after the completion of the reaction.
Steps to balance a chemical equation are as follows:
step1: Write down the unbalanced chemical equation
step2: Make a list of all the elements present on the reactant side and the product side.
step3: Now we have to make sure that the number of atoms on the reactant side should be equal to that of the right side, so to make that multiply with the required mathematical number.
step4: Write down the coefficients in front of chemical species.
step5: If charge is present in the chemical equation then balance it with the help of electrons (negatively charged).
The complete chemical equation for $ {\text{C + }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}({\text{conc}}{\text{.}}) \to $ is as follows:
 $ {\text{C + }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}({\text{conc}}{\text{.}}) \to {\text{C}}{{\text{O}}_{\text{2}}}{\text{ + S}}{{\text{O}}_{\text{2}}}{\text{ + }}{{\text{H}}_{\text{2}}}{\text{O}} $
To balance this equation we can see that if we make the coefficient of sulphuric acid sulphur dioxide and water, molecule two the equation will be balanced.
Therefore the balanced chemical equation is as follows:
 $ {\text{C + 2}}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}({\text{conc}}{\text{.}}) \to {\text{C}}{{\text{O}}_{\text{2}}}{\text{ + 2S}}{{\text{O}}_{\text{2}}}{\text{ + 2}}{{\text{H}}_{\text{2}}}{\text{O}} $
The complete chemical equation for $ {\text{Xe}}{{\text{F}}_{\text{2}}}{\text{ + P}}{{\text{F}}_5} \to $ is as follows:
 $ {\text{Xe}}{{\text{F}}_{\text{2}}}{\text{ + P}}{{\text{F}}_5} \to {[{\text{XeF}}]^ + } + {[{\text{P}}{{\text{F}}_6}]^ - } $
It is already a balanced chemical equation, the number of atoms are equal and total charge on both reactant and product side is the same.

Note:
The basic difference between the chemical reactions and chemical equation is that the formation of new products from the reactants is known as chemical reaction while the representation of this reaction using symbols and formulae is known as chemical equation.