Question

balance the following equations show the number of atoms for each element in each side of the equation

Answer 1

(1)
`Cl_2+2LiI\rightarrow 2LiCl+I_2`

(2)
`N_2+3H_2\rightarrow 2NH_3`

(3)
`Ca(OH)_2+2HCl\rightarrow CaCl_2+H_2O`

(4)
`2Al(NO_3)_3+3H_2SO_4\rightarrow Al_2(SO_4)_3+6HNO_3`

(5)
`C_4H_8+6O_2\rightarrow 4CO_2+4H_2O`

(6)
`(NH_4)_2SO_4+2KOH\rightarrow K_2SO_4+2NH_3+2H_2O`

(7)
`2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O`

(8)
`2H_3PO_4+3Mg(OH)_2\rightarrow Mg_3(PO_4)_2+6H_2O`

(9)
`Al(NO_3)_3+3NaOH\rightarrow 3NaNO_3+Al(OH)_3`

(10)
`BaCl_2+Na_2SO_4\rightarrow BaSO_4+2NaCl`

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 unbalanced chemical reaction is,

`Cl_2+LiI\rightarrow LiCl+I_2`

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

The balanced chemical reaction will be,

`Cl_2+2LiI\rightarrow 2LiCl+I_2`

Part 2 :

The unbalanced chemical reaction is,

`N_2+H_2\rightarrow NH_3`

In order to balance the chemical equation, the coefficient '3' put before the
`H_2` and the coefficient '2' put before the
`NH_3` then we get the balanced chemical equation.

The balanced chemical reaction will be,

`N_2+3H_2\rightarrow 2NH_3`

Part 3 :

The unbalanced chemical reaction is,

`Ca(OH)_2+HCl\rightarrow CaCl_2+H_2O`

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

The balanced chemical reaction will be,

`Ca(OH)_2+2HCl\rightarrow CaCl_2+H_2O`

Part 4 :

The unbalanced chemical reaction is,

`Al(NO_3)_3+H_2SO_4\rightarrow Al_2(SO_4)_3+HNO_3`

In order to balance the chemical equation, the coefficient '2' put before the
`Al(NO_3)_3`, the coefficient '3' put before the
`H_2SO_4` and the coefficient '6' put before the
`HNO_3` then we get the balanced chemical equation.

The balanced chemical reaction will be,

`2Al(NO_3)_3+3H_2SO_4\rightarrow Al_2(SO_4)_3+6HNO_3`

Part 5 :

The unbalanced chemical reaction is,

`C_4H_8+O_2\rightarrow CO_2+H_2O`

In order to balance the chemical equation, the coefficient '6' put before the
`O_2`, the coefficient '4' put before the
`CO_2` and the coefficient '4' put before the
`H_2O` then we get the balanced chemical equation.

The balanced chemical reaction will be,

`C_4H_8+6O_2\rightarrow 4CO_2+4H_2O`

Part 6 :

The unbalanced chemical reaction is,

`(NH_4)_2SO_4+KOH\rightarrow K_2SO_4+NH_3+H_2O`

In order to balance the chemical equation, the coefficient '2' put before the
`KOH,NH_3` and
`H_2O` then we get the balanced chemical equation.

The balanced chemical reaction will be,

`(NH_4)_2SO_4+2KOH\rightarrow K_2SO_4+2NH_3+2H_2O`

Part 7 :

The unbalanced chemical reaction is,

`C_2H_2+O_2\rightarrow CO_2+H_2O`

In order to balance the chemical equation,the coefficient '2' put before the
`C_2H_2`, the coefficient '5' put before the
`O_2`, the coefficient '4' put before the
`CO_2` and the coefficient '2' put before the
`H_2O` then we get the balanced chemical equation.

The balanced chemical reaction will be,

`2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O`

Part 8 :

The unbalanced chemical reaction is,

`H_3PO_4+Mg(OH)_2\rightarrow Mg_3(PO_4)_2+H_2O`

In order to balance the chemical equation,the coefficient '2' put before the
`H_3PO_4`, the coefficient '3' put before the
`Mg(OH)_2` and the coefficient '6' put before the
`H_2O` then we get the balanced chemical equation.

The balanced chemical reaction will be,

`2H_3PO_4+3Mg(OH)_2\rightarrow Mg_3(PO_4)_2+6H_2O`

Part 9 :

The unbalanced chemical reaction is,

`Al(NO_3)_3+NaOH\rightarrow NaNO_3+Al(OH)_3`

In order to balance the chemical equation,the coefficient '3' put before the
`NaOH` and the coefficient '3' put before the
`NaNO_3` then we get the balanced chemical equation.

The balanced chemical reaction will be,

`Al(NO_3)_3+3NaOH\rightarrow 3NaNO_3+Al(OH)_3`

Part 10 :

The unbalanced chemical reaction is,

`BaCl_2+Na_2SO_4\rightarrow BaSO_4+NaCl`

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

The balanced chemical reaction will be,

`BaCl_2+Na_2SO_4\rightarrow BaSO_4+2NaCl`