Question

Give two-two example of each of the following:-
(i) Combination reaction
(ii) Decomposition reaction
(iii) Oxidation reaction
(iv) Reduction reaction
(v) Redox reaction
(vi) Exothermic reaction
(vii) Endothermic reaction.

Answer 1

(i) Combination reaction
# C + O2 — CO2
# H2 + Cl2 — 2HCL

(ii) Decomposition reaction
# CaCO3 — CaO + O2
# KCLO3 — KCL + O2

(iii) Oxidation reaction
# CuO + H2 — Cu + H2 O
# H2S + Cl2 — S + HCL

(iv) Reduction reaction
# ZnO + C — Zn + CO
# MnO2 + HCL — MnCl2 + Cl2 + H2O

(v) Redox reaction
# Na + O2 — Na2O
# PbO + C — Pb + CO2

(vi) Exothermic reaction
# CH4 + O2 — CO2 + H2O + Heat ↑
# Zn + 2HCl — ZnCl2 + H2 + Heat ↑

(vii) Endothermic reaction
# N2 + O2 + Heat ↓ — NO
# NH4Cl + H2O — NH4Cl - heat↓