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Chemical Properties of Alkanes

Mg + 2H+ → Mg...

Question

$M g + 2 H^{+} \to M g^{2 +} + H_{2}$

In the above reaction, which one of the following is oxidised?

A

M g

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B

H^{+}

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C

M g^{2 +}

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D

None of these

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Solution

The correct option is C $M g$
The oxidation number of Mg increases from 0 to +2. Thus, Mg is oxidized.
The oxidation number of hydrogen decreases from 0 to -1. Thus hydrogen is reduced.

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Similar questions

Q. In the following reaction, the correct statements are:

M g + 2 H^{+} \to M g^{2 +} + H_{2}

M g

is a reducing agent,

H^{+}

is an oxidising agent.
2.

M g

is oxidising agent,

H^{+}

is a reducing agent.

Q. In the following reaction, identify the species oxidised, the species reduced, the oxidising agent and the reducing agent:

2 H^{+} + M g \to M g^{2 +} + H_{2}

Q. Refer to the following experimental data.

Half Reaction	Eo
I. $M g \to {M g}^{2 +} + 2 e^{-}$	2.37V
II. $M n \to {M n}^{2 +} + 2 e^{-}$	1.03V
III. $H_{2} \to 2 H^{+} + 2 e^{-}$	0.00V
IV. $C u \to {C u}^{2 +} + 2 e^{-}$	-0.16V

What will be the standard reduction potential for the reaction:

M g + M n^{2 +} \to M g^{2 +} + M n

Half Reaction	Eo
I. $M g \to {M g}^{2 +} + 2 e^{-}$	2.37V
II. $M n \to {M n}^{2 +} + 2 e^{-}$	1.03V
III. $H_{2} \to 2 H^{+} + 2 e^{-}$	0.00V
IV. $C u \to {C u}^{2 +} + 2 e^{-}$	-0.16V

From the above experimental data which of the following represents a spontaneous process?

Q. Refer to the following experimental data.

Half Reaction	$E_{o}$
I. $M g \to {M g}^{2 +} + 2 e^{-}$	2.37V
II. $M n \to {M n}^{2 +} + 2 e^{-}$	1.03V
III. $H_{2} \to 2 H^{+} + 2 e^{-}$	0.00V
IV. $C u \to {C u}^{2 +} + 2 e^{-}$	-0.16V

Which of the following reactions is spontaneous?

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