Question

Balance the given equations by inserting the appropriate coefficients.

chemical equation: P+0— P,0g

chemical equation: C, H+0, — CO, +,0

Answer 1

(1) The balanced chemical reaction will be,

`P_4+5O_2\rightarrow 2P_2O_5`

(2) The balanced chemical reaction will be,

`2C_2H_6+7O_2\rightarrow 4CO_2+6H_2O`

Step-by-step 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,

`P_4+O_2\rightarrow P_2O_5`

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
`P_2O_5` and the coefficient '5' put before the
`O_2` then we get the balanced chemical equation.

The balanced chemical reaction will be,

`P_4+5O_2\rightarrow 2P_2O_5`

Part 2 :

The given unbalanced chemical reaction is,

`C_2H_6+O_2\rightarrow CO_2+H_2O`

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
`C_2H_6`, the coefficient '7' put before the
`O_2`, the coefficient '4' put before the
`CO_2` and the coefficient '6' put before the
`H_2O` then we get the balanced chemical equation.

The balanced chemical reaction will be,

`2C_2H_6+7O_2\rightarrow 4CO_2+6H_2O`