Question

Long Answer Type Questions
19. (a) Name the reducing agent, oxidizing agent,substance oxidized and substance reduced in the following redox reactions:
(i)2H2S + SO2 ---》3S + 2H2O
(ii) Cr2O3 + 2Al ---》 2Cr + Al2O3
(iii) PbS + 4H2O2 ---》PbSO4 + 4H20
(iv) H2S + Br2 ---》 2HBr + S​

Answer 1

Answer:

1) oxidised- H2S

reduced- SO2

oxidising agent- SO2

reducing agent- H2S

2) oxidised- AL

reduced- Cr2O3

oxidising agent- Cr203

reducing agent-AL

3) oxidised- PbS

reduced- H2O

oxidising agent-H2O

reducing agent- PbS

4) oxidised- H2S

reduced- H2S

oxidising agent-H2S

reducing agent- H2S

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