(a) 2KBr + BaI2 → 2KI + BaBr2 Type of reaction: Double displacement reaction. Because the cation K+ and Ba2+ have exchanged their anions Br- and SO42- . (b) ZnCO3 → ZnO + CO2 Type of reaction: Decomposition reaction. Because in this reaction single reactant break down into two productRead more
(a) 2KBr + BaI2 → 2KI + BaBr2
Type of reaction: Double displacement reaction. Because the cation K+ and Ba2+ have exchanged their anions Br– and SO42- .
(b) ZnCO3 → ZnO + CO2
Type of reaction: Decomposition reaction. Because in this reaction single reactant break down into two product
(c) H2 + Cl2 → 2HCl
Type of reaction: Combination. Because in this reaction two reactant combine into single product.
(d) Mg + 2HCl → MgCl2 + H2
Type of reaction : disclacement reaction because H in HCl has been displaced by Mg.
Exothermic reaction: A reaction in which energy is released in the form of heat or light. Eg.: Burning of Natural gas (methane) CH4(g) + O2(g) → CO2(g) + H2O(l) + Heat Endothermic reaction: A reaction in which energy is absorbed from the surroundings and cooling is produced. Eg.: DecomposiRead more
Exothermic reaction: A reaction in which energy is released in the form of heat or light.
Eg.: Burning of Natural gas (methane)
CH4(g) + O2(g) → CO2(g) + H2O(l) + Heat
Endothermic reaction: A reaction in which energy is absorbed from the surroundings and cooling is produced.
Eg.: Decomposition of calcium carbonate
CaCO3(s) ————-→ CaO(s) + CO2(g)
Calcium Carbonate Calcium oxide Carbon dioxide
or Lime stone or quick lime
Respiration is a process in which we inhale oxygen from the atmosphere which oxidises glucose in our body to produce carbon dioxide, water and heat is evolved. C6H12O6(aq) + 6O2(g) ----------> 6CO2 + 6H 2O(l) + Heat Hence, heat is evolved during respiration it is considered as an exothermicRead more
Respiration is a process in which we inhale oxygen from the atmosphere which oxidises glucose in our body to produce carbon dioxide, water and heat is evolved.
C6H12O6(aq) + 6O2(g) ———-> 6CO2 + 6H 2O(l) + Heat
Hence, heat is evolved during respiration it is considered as an exothermic reaction.
Balance the following chemical equations.
(a) 2HNO3 + Ca(OH)2 → Ca(NO3)2 + 2H2O (b) 2NaOH + H2SO4 → Na2SO4 + 2H2O (c) NaCl + AgNO3 → AgCl + NaNO3 (d) BaCl2 + H2SO4 → BaSO4 + 2HCl
(a) 2HNO3 + Ca(OH)2 → Ca(NO3)2 + 2H2O
(b) 2NaOH + H2SO4 → Na2SO4 + 2H2O
(c) NaCl + AgNO3 → AgCl + NaNO3
(d) BaCl2 + H2SO4 → BaSO4 + 2HCl
See lessWrite the balanced chemical equations for the following reactions.
(a) Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water Ca(OH)2 + CO2 → CaCO3 + H2O (b) Zinc + Silver nitrate → Zinc nitrate + Silver Zn + AgNO3 → Zn(NO3)2 + Ag (c) Aluminium + Copper chloride → Aluminium chloride + Copper 2Al + 3CuCl2 → 2AlCl3 + 3Cu (d) BRead more
(a) Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water
Ca(OH)2 + CO2 → CaCO3 + H2O
(b) Zinc + Silver nitrate → Zinc nitrate + Silver
Zn + AgNO3 → Zn(NO3)2 + Ag
(c) Aluminium + Copper chloride → Aluminium chloride + Copper
2Al + 3CuCl2 → 2AlCl3 + 3Cu
(d) Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride
BaCl2 + K2SO4 → BaSO4 + 2KCl
See lessWrite the balanced chemical equation for the following and identify the type of reaction in each case.
(a) 2KBr + BaI2 → 2KI + BaBr2 Type of reaction: Double displacement reaction. Because the cation K+ and Ba2+ have exchanged their anions Br- and SO42- . (b) ZnCO3 → ZnO + CO2 Type of reaction: Decomposition reaction. Because in this reaction single reactant break down into two productRead more
(a) 2KBr + BaI2 → 2KI + BaBr2
Type of reaction: Double displacement reaction. Because the cation K+ and Ba2+ have exchanged their anions Br– and SO42- .
(b) ZnCO3 → ZnO + CO2
Type of reaction: Decomposition reaction. Because in this reaction single reactant break down into two product
(c) H2 + Cl2 → 2HCl
Type of reaction: Combination. Because in this reaction two reactant combine into single product.
(d) Mg + 2HCl → MgCl2 + H2
See lessType of reaction : disclacement reaction because H in HCl has been displaced by Mg.
What does one mean by exothermic and endothermic reactions? Give examples.
Exothermic reaction: A reaction in which energy is released in the form of heat or light. Eg.: Burning of Natural gas (methane) CH4(g) + O2(g) → CO2(g) + H2O(l) + Heat Endothermic reaction: A reaction in which energy is absorbed from the surroundings and cooling is produced. Eg.: DecomposiRead more
Exothermic reaction: A reaction in which energy is released in the form of heat or light.
Eg.: Burning of Natural gas (methane)
CH4(g) + O2(g) → CO2(g) + H2O(l) + Heat
Endothermic reaction: A reaction in which energy is absorbed from the surroundings and cooling is produced.
Eg.: Decomposition of calcium carbonate
CaCO3(s) ————-→ CaO(s) + CO2(g)
See lessCalcium Carbonate Calcium oxide Carbon dioxide
or Lime stone or quick lime
Why is respiration considered an exothermic reaction? Explain.
Respiration is a process in which we inhale oxygen from the atmosphere which oxidises glucose in our body to produce carbon dioxide, water and heat is evolved. C6H12O6(aq) + 6O2(g) ----------> 6CO2 + 6H 2O(l) + Heat Hence, heat is evolved during respiration it is considered as an exothermicRead more
Respiration is a process in which we inhale oxygen from the atmosphere which oxidises glucose in our body to produce carbon dioxide, water and heat is evolved.
C6H12O6(aq) + 6O2(g) ———-> 6CO2 + 6H 2O(l) + Heat
Hence, heat is evolved during respiration it is considered as an exothermic reaction.
See less