Respuesta :
Explanation:
A balanced equation is defined as the one that has equal number of atoms of all the elements present on both reactant and product side.
(a) [tex]Mg(OH)_{2} + HClO_{4} \rightarrow Mg(ClO_{4})_{2} + H_{2}O[/tex]
Number of atoms on reactant side are as follows.
Mg = 1
O = 6
H = 3
Cl = 1
Number of atoms on product side are as follows.
Mg = 1
O = 9
H = 2
Cl = 2
So, to balance this equation we multiply [tex]Mg(OH)_{2}[/tex] by 2 on reactant side and multiply [tex]H_{2}O[/tex] by 2 on product side.
Therefore, the balanced reaction equation is as follows.
[tex]2Mg(OH)_{2} + HClO_{4} \rightarrow Mg(ClO_{4})_{2} + 2H_{2}O[/tex]
(b) [tex]SO_{3} + H_{2}O \rightarrow H_{2}SO_{4}[/tex]
Number of atoms on reactant side are as follows.
S = 1
O = 4
H = 2
Number of atoms on product side are as follows.
S = 1
O = 4
H = 2
Therefore, this equation is balanced as it has same number of atoms on both reactant and product side.
(c) [tex]SrO + H_{2}SO_{4} \rightarrow SrSO_{4} + H_{2}O[/tex]
Number of atoms on reactant side are as follows.
Sr = 1
O = 1
H = 2
S = 1
O = 4
Number of atoms on product side are as follows.
Sr = 1
O = 1
H = 2
S = 1
O = 4
Therefore, this equation is balanced.
