From the following reaction, identify the substance that has undergone oxidation and the substance that has undergone reduction. Equation of reaction Substance oxidised Substance reduced Reason behind your answer 2 SO 2 + O 2 → 2 SO 3

Completed table is: Equation of reaction Substance oxidised Substance reduced Reason behind your answer 2 SO 2 + O 2 → 2 SO 3 SO 2 O 2 The reaction in which element combines with oxygen is called oxidation. The reaction where oxygen gets eliminated from compound is known as reduction.

From the following reaction, identify the substance that has undergone oxidation and the substance that has undergone reduction. Equation of reaction Substance oxidised Substance reduced Reason behind your answer Fe 2 O 3 + 3 CO → 2 Fe + 3 CO 2

The completed table is: Equation of reaction Substance oxidised Substance reduced Reason behind your answer Fe 2 O 3 + 3 CO → 2 Fe + 3 CO 2 CO Fe 2 O 3 In this reaction, Fe 2 O 3 donates its oxygen to CO and forms Fe . Therefore, the substance oxidised is CO and the substance reduced is Fe 2 O 3 .

From the following reaction, identify the substance that has undergone oxidation and the substance that has undergone reduction. Equation of reaction Substance oxidised Substance reduced Reason behind your answer ZnO + C → Zn + CO

The completed table is: Equation of reaction Substance oxidised Substance reduced Reason behind your answer ZnO + C → Zn + CO C ZnO In this reaction, zinc oxide loses its oxygen and forms zinc metal. Whereas, carbon gain oxygen and forms carbon monoxide. Therefore, carbon is oxidised and zinc oxide is reduced.

From the following reaction, identify the substance that has undergone oxidation and the substance that has undergone reduction. Equation of reaction Substance oxidised Substance reduced Reason behind your answer 2 FeCl 3 + H 2 S → 2 FeCl 2 + 2 HCl + S ↓

Completed table is: Equation of reaction Substance oxidised Substance reduced Reason behind your answer 2 FeCl 3 + H 2 S → 2 FeCl 2 + 2 HCl + S ↓ H 2 S FeCl 3 In this reaction, FeCl 3 oxidises H 2 S which results in the formation of ferrous chloride, HCl and sulphur gets precipitated. So, H 2 S is oxidised and FeCl 3 is reduced.

From the following reaction, identify the substance that has undergone oxidation and the substance that has undergone reduction. Equation of reaction Substance oxidised Substance reduced Reason behind your answer FeO + H 2 → Fe + H 2 O

Completed table is: Equation of reaction Substance oxidised Substance reduced Reason behind your answer FeO + H 2 → Fe + H 2 O H 2 FeO In this reaction, FeO loses its oxygen and forms iron. Whereas, H 2 combine with oxygen and form water. Hence, H 2 is oxidised and FeO is reduced.

From the following reaction, identify the substance that has undergone oxidation and the substance that has undergone reduction. Equation of reaction Substance oxidised Substance reduced Reason behind your answer Fe 2 O 3 + Al → 2 Fe + Al 2 O 3

Completed table is: Equation of reaction Substance oxidised Substance reduced Reason behind your answer Fe 2 O 3 + Al → 2 Fe + Al 2 O 3 Al Fe 2 O 3 In this reaction, Fe 2 O 3 loses its oxygen and forms iron metal. Whereas, Al combines with oxygen and forms Al 2 O 3 . So, Al is oxidised and Fe 2 O 3 i reduced.

Write what happened in the following reactions in the table below. State which one is oxidation and which one is reduction. Equations of the reactions What happened Oxidation or reduction (i) Fe 3 + + e - → Fe 2 + (ii) Cl - → Cl + e - (iii) MnO 4 2 - → MnO 4 - + e - (iv) Cu 2 + + 2 e - → Cu

Completed table is: Equations of the reactions What happened Oxidation or reduction (i) Fe 3 + + e - → Fe 2 + Here, Fe 3 + accepts one electron and forms Fe 2 + . Reduction (ii) Cl - → Cl + e - In this reaction, Cl - eliminates electron and forms chlorine atom. Oxidation (iii) MnO 4 2 - → MnO 4 - + e - In this reaction, MnO 4 2 - eliminate electron and forms MnO 4 - . Oxidation (iv) Cu 2 + + 2 e - → Cu In this reaction, Cu 2 + accepts two electrons and form copper atom. Reduction

MEDIUM

8th West Bengal Board

IMPORTANT

Earn 100

Pouring water on quicklime $(CaO)$ generates steam and slaked lime $(Ca {(OH)}_{2})$ is formed. Explain how steam is formed.

Important Questions on Element, Compound and Chemical Reaction

MEDIUM

8th West Bengal Board

IMPORTANT

Environment and Science Class 8>Chapter 2 - Element, Compound and Chemical Reaction>Exercise 12>Q 5

We burn a mixture of oxygen and acetylene gas kept at high pressure for welding metals. Where does the light come from?

MEDIUM

8th West Bengal Board

IMPORTANT

Environment and Science Class 8>Chapter 2 - Element, Compound and Chemical Reaction>Exercise 13>Q i)