8. Write the balanced chemical equation for the following and identify the type of
reaction in each case.
(a) Potassium bromide(aq) + Barium iodide(aq) → Potassium iodide(aq) +
Barium bromide(s)
(b) Zinc carbonate(s) → Zinc oxide(s) + Carbon dioxide(g)
(c) Hydrogen(g) + Chlorine(g) → Hydrogen chloride(g)
(d) Magnesium(s) + Hydrochloric acid(aq) + Magnesium chloride(aq) + Hydrogen(g
Answers
A - 2KBr
2KBr (aq)
2KBr (aq)
2KBr (aq) +BaI
2KBr (aq) +BaI 2
2KBr (aq) +BaI 2
2KBr (aq) +BaI 2
2KBr (aq) +BaI 2 (aq)
2KBr (aq) +BaI 2 (aq)
2KBr (aq) +BaI 2 (aq) →2KI
2KBr (aq) +BaI 2 (aq) →2KI (aq)
2KBr (aq) +BaI 2 (aq) →2KI (aq)
2KBr (aq) +BaI 2 (aq) →2KI (aq) +BaBr
2KBr (aq) +BaI 2 (aq) →2KI (aq) +BaBr 2
2KBr (aq) +BaI 2 (aq) →2KI (aq) +BaBr 2
2KBr (aq) +BaI 2 (aq) →2KI (aq) +BaBr 2
2KBr (aq) +BaI 2 (aq) →2KI (aq) +BaBr 2 (s)
2KBr (aq) +BaI 2 (aq) →2KI (aq) +BaBr 2 (s)
( B ) - ZnCO
ZnCO 3
ZnCO 3
ZnCO 3
ZnCO 3 (s)
ZnCO 3 (s)
ZnCO 3 (s) →ZnO
ZnCO 3 (s) →ZnO (s)
ZnCO 3 (s) →ZnO (s)
ZnCO 3 (s) →ZnO (s) +CO
ZnCO 3 (s) →ZnO (s) +CO 2
ZnCO 3 (s) →ZnO (s) +CO 2
ZnCO 3 (s) →ZnO (s) +CO 2
ZnCO 3 (s) →ZnO (s) +CO 2 (g)
ZnCO 3 (s) →ZnO (s) +CO 2 (g)
ZnCO 3 (s) →ZnO (s) +CO 2 (g)
( C ) - H
H 2
H 2
H 2
H 2 (g)
H 2 (g)
H 2 (g) +Cl
H 2 (g) +Cl 2
H 2 (g) +Cl 2
H 2 (g) +Cl 2
H 2 (g) +Cl 2 (g)
H 2 (g) +Cl 2 (g)
H 2 (g) +Cl 2 (g) →2HCl
H 2 (g) +Cl 2 (g) →2HCl (g)
H 2 (g) +Cl 2 (g) →2HCl (g)
H 2 (g) +Cl 2 (g) →2HCl (g)
( D ) - Mg
Mg (s)
Mg (s)
Mg (s) +2HCl
Mg (s) +2HCl (aq)
Mg (s) +2HCl (aq)
Mg (s) +2HCl (aq) →MgCl
Mg (s) +2HCl (aq) →MgCl 2
Mg (s) +2HCl (aq) →MgCl 2
Mg (s) +2HCl (aq) →MgCl 2
Mg (s) +2HCl (aq) →MgCl 2 (aq)
Mg (s) +2HCl (aq) →MgCl 2 (aq)
Mg (s) +2HCl (aq) →MgCl 2 (aq) +H
Mg (s) +2HCl (aq) →MgCl 2 (aq) +H 2
Mg (s) +2HCl (aq) →MgCl 2 (aq) +H 2
Mg (s) +2HCl (aq) →MgCl 2 (aq) +H 2
Mg (s) +2HCl (aq) →MgCl 2 (aq) +H 2 (g)
Mg (s) +2HCl (aq) →MgCl 2 (aq) +H 2 (g)
Mg (s) +2HCl (aq) →MgCl 2 (aq) +H 2 (g)
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