Question

Name the substance oxidised and substance reduced in the following reactions: (a) MnO2 + 4HCl → MnCl2 + Cl2 + 2H2O (b) 2H2S + SO2 → 2H2O + 3S (c) 2PbO + C → 2Pb + CO2 (d) PbS + 4H2O2 → PbSO4 + 4H2O (e) CuO + H2 Heat → Cu + H2O 3. Balance the following chemical equations: (a) HNO3 + Ca (OH)2 → Ca(NO3)2 + H2O (b) NaOH + H2SO4 → Na2SO4 + H2O (c) NaCl + AgNO3 → AgCl + NaNO3 (d) BaCl2 + H2SO4 → BaSO4 + HCl

Answer 1

Answer:

here mn that is manganese is reduced and h that is hydrogen is oxidised

Answer 2

Explanation:

a. Mn is reduced and Cl is oxidised

b. His oxidised and S is reduced

c. Pb is reduced and C is oxidised

d. Pb is oxidised and His reduced

e. Cu is reduced and H is oxidised