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Standard XII

Chemistry

Assigning Oxidation Numbers

Oxygen gas re...

Question

Oxygen gas reacts with hydrogen to produce water. The reaction is represented by the equation :
$O_{2} (g) + H_{2} (g) \to H_{2} O (g)$ .
The above reaction is an example of
(a)Oxidation of hydrogen
(b)Reduction of oxygen
(c)Reduction of hydrogen
(d)Redox reaction

(a), (b) and (c)

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(b), (c) and (d)

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(a),(c) and (d)

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(a),(b) and (d)

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Solution

The correct option is D (a),(b) and (d)
$O_{2} + H_{2} \to H_{2} O_{(g)}$
O.S.of $O_{2} b e c o m e \to z e r o t o - 2$
$∵$ it will be reduced and oxidation state of $H_{2}$ becomes zero to $+ 1$ it will be oxidised.
$∴$ reaction will be redox

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Similar questions

Q. Oxygen gas reacts with hydrogen to produce water. The reaction is represented by the equation:

O_{2} (g) + H_{2} (g) \to H_{2} O (g)

The above reaction is an example of

1

Oxidation of hydrogen

2

Reduction of oxygen

3

Reduction of hydrogen

4

Redox reaction

Q. Oxygen gas reacts with hydrogen to produce water. The reaction is represented by the equation:

O_{2} (g) + H_{2} (g) ⟶ H_{2} O (g)

The above reaction is an example of
a) Oxidation of hydrogen
b) Reduction of oxygen
c) Reduction of hydrogen
d) Redox reaction

Q. When a substance A reacts with water, it produces a combustible gas B and a solution of substance C in water. D reacts with this solution of C and produces the same gas B on warming. D can also produce gas B on reaction with dilute

H_{2} S O_{4}

. A imparts a deep golden yellow colour to smokeless flame. A, B, C and D respectively are:

When a substance

A

reacts with water, it produces a combustible gas

B

and a solution of substance

C

in water.

D

reacts with this solution of

C

and produces the same gas

B

on warming.

D

can also produce gas

B

on reaction with dilute

H_{2} S O_{4}

A

imparts a deep golden yellow colour to a smokeless flame.

A, B, C

and

D

are respectively:

Q. The reaction of an element

A

with water produces combustible gas

B

and an aqueous solution of

C

. When another substance

D

reacts with this solution

C

also produces the same gas as

B

D

also produces the same gas even on reaction with dilute

H_{2} S O_{4}

at room temperature. Element

A

imparts a golden yellow colour to the bunsen flame. Then

A, B, C

and

D

may be identified as :

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Oxygen gas reacts with hydrogen to produce water. The reaction is represented by the equation :O2(g)+H2(g)→H2O(g).The above reaction is an example of(a)Oxidation of hydrogen(b)Reduction of oxygen(c)Reduction of hydrogen(d)Redox reaction

The correct option is D (a),(b) and (d)O2+H2→H2O(g)O.S.of O2become→zeroto−2∵ it will be reduced and oxidation state of H2 becomes zero to +1 it will be oxidised.∴ reaction will be redox

Oxygen gas reacts with hydrogen to produce water. The reaction is represented by the equation :
$O_{2} (g) + H_{2} (g) \to H_{2} O (g)$ .
The above reaction is an example of
(a)Oxidation of hydrogen
(b)Reduction of oxygen
(c)Reduction of hydrogen
(d)Redox reaction

The correct option is D (a),(b) and (d)
$O_{2} + H_{2} \to H_{2} O_{(g)}$
O.S.of $O_{2} b e c o m e \to z e r o t o - 2$
$∵$ it will be reduced and oxidation state of $H_{2}$ becomes zero to $+ 1$ it will be oxidised.
$∴$ reaction will be redox