Answer:
Reaction 1 is balanced but 2 is not balanced , the balance equation are :
1. [tex]CH_{3}COOH(aq) + NaHCO_{3}(aq)\rightarrow CO_{2}(g) + H_{2}O(l) + CH_{3}COONa(aq)[/tex]
2.[tex]CaCl_{2}(aq) + 2NaHCO_{3}(aq)\rightarrow CaCO_{3}(aq) + H_{2}O(l) + 2NaCl(aq) + H_{2}O(aq)[/tex]
Explanation:
Balanced Equations : These are the equation which follows the law of conservation of mass .
The total number of atoms present in reactant is equal to total number of atoms present in product.
1. [tex]CH_{3}COOH(aq) + NaHCO_{3}(aq)\rightarrow CO_{2}(g) + H_{2}O(l) + CH_{3}COONa(aq)[/tex]
This is acid - base type reaction where
[tex]CH_{3}COOH(aq)[/tex] act as Acid
[tex] NaHCO_{3}(aq)[/tex] act as weak base
Reactant :[tex]CH_{3}COOH(aq)[/tex] ,[tex]NaHCO_{3}[/tex]
Number of atoms of :
C = 2 ([tex]CH_{3}COOH(aq)[/tex]) + 1 ([tex]NaHCO_{3}[/tex])
= 2 + 1
= 3
H = 4([tex]CH_{3}COOH(aq)[/tex]) + 1 ([tex]NaHCO_{3}[/tex])
= 4 + 1
5
O = 2([tex]CH_{3}COOH(aq)[/tex]) + 3 ([tex]NaHCO_{3}[/tex])
= 5
Na = 1 ([tex]NaHCO_{3}[/tex])
= 1
Product : [tex]CO_{2}(g)[/tex],[tex]H_{2}O(l)[/tex] , [tex]CH_{3}COONa(aq)[/tex]
Number of atoms :
C = 1([tex]CO_{2}(g)[/tex]) + 2([tex]CH_{3}COONa(aq)[/tex])
= 1 + 2
= 3
H = 2([tex]H_{2}O(l)[/tex]) + 3([tex]CH_{3}COONa(aq)[/tex])
= 2 + 3
= 5
O = 1([tex]H_{2}O(l)[/tex]) + 2([tex]CH_{3}COONa(aq)[/tex])
+2([tex]CO_{2}(g)[/tex]
= 1 + 2 + 2
= 5
Na = 1([tex]CH_{3}COONa(aq)[/tex]
= 1
Number of Na =1 , C = 3 , H= 5 and O =5 in both reactant and product , so it is a balanced reaction
2.[tex]CaCl_{2}(aq) + 2NaHCO_{3}(aq)\rightarrow CaCO_{3}(aq) + H_{2}O(l) + 2NaCl(aq) + CO_{2}(g)[/tex]
This is double displacement reaction .
Check the balancing in both reactant and products should be :
Na = 2
H = 2
Ca = 1
C = 2
O = 6
Cl = 2
