I Explain the following in terms of gain or loss of oxygen-a Oxidationb Reductionii In the reaction-3MnO2 - 4Al- 3Mn - 2Al2O3a Name the substance oxidisedb Name the substance reducedc Name the oxidizing agentd Name the reducing agent

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Standard X

Chemistry

Reaction of Metals with Dil. Sulphuric Acid

i Explain the...

Question

(i) Explain the following in terms of gain or loss of oxygen:

(a) Oxidation
(b) Reduction

(ii) In the reaction:

$3 M n O_{2} + 4 A l \to 3 M n + 2 A l_{2} O_{3}$
(a) Name the substance oxidised
(b) Name the substance reduced
(c) Name the oxidizing agent
(d) Name the reducing agent

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Solution

(i) (a) Oxidation: Oxidation is a chemical reaction in which a substance gains oxygen or an electronegative element.

(b) Reduction: Reduction is a chemical reaction in which a loss of oxygen or electronegative radical takes place.

(ii)(a)Al
$(b) M n O_{2}$
$(c) M n O_{2}$
(d)Al

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Q. In the reaction

3 M n O_{2} + 4 A l \to 3 M n + 2 A l_{2} O_{3}

the oxidizing agent is:

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(i) Explain the following in terms of gain or loss of oxygen: (a) Oxidation (b) Reduction (ii) In the reaction: 3MnO2+4Al→3Mn+2Al2O3 (a) Name the substance oxidised (b) Name the substance reduced (c) Name the oxidizing agent (d) Name the reducing agent

(i) (a) Oxidation: Oxidation is a chemical reaction in which a substance gains oxygen or an electronegative element. (b) Reduction: Reduction is a chemical reaction in which a loss of oxygen or electronegative radical takes place. (ii)(a)Al (b) MnO2 (c) MnO2 (d)Al

(i) Explain the following in terms of gain or loss of oxygen:

(a) Oxidation
(b) Reduction

(ii) In the reaction:

$3 M n O_{2} + 4 A l \to 3 M n + 2 A l_{2} O_{3}$
(a) Name the substance oxidised
(b) Name the substance reduced
(c) Name the oxidizing agent
(d) Name the reducing agent

(i) (a) Oxidation: Oxidation is a chemical reaction in which a substance gains oxygen or an electronegative element.

(b) Reduction: Reduction is a chemical reaction in which a loss of oxygen or electronegative radical takes place.

(ii)(a)Al
$(b) M n O_{2}$
$(c) M n O_{2}$
(d)Al