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Question: If a mole of hydrogen molecule is heated to a high temperature then following reaction which of the ...

If a mole of hydrogen molecule is heated to a high temperature then following reaction which of the take place?

A

H(2)g+436KJmol−1→H(g)+H(g)H_{(2)g} + 436KJmol^{- 1} \rightarrow H_{(g)} + H_{(g)}

B

2H2(g)+820kJmol−1→2H2(g)2H_{2(g)} + 820kJmol^{- 1} \rightarrow 2H_{2(g)}

C

H2(g)+H2(g)+436KJmol−1→H+(aq)+H(aq)−H_{2(g)} + H_{2(g)} + 436KJmol^{- 1} \rightarrow {H^{+}}_{(aq)} + H_{(aq)}^{-}

D

H2(g)+200KJmol−1→H(g)+H(g)H_{2(g)} + 200KJmol^{- 1} \rightarrow H_{(g)} + H_{(g)}

Answer

H(2)g+436KJmol−1→H(g)+H(g)H_{(2)g} + 436KJmol^{- 1} \rightarrow H_{(g)} + H_{(g)}

Explanation

Solution

: The amount of energy required to break H – H

bond of 1 mole if hydrogen is 436 KJ mol−1mol^{- 1}

H2(g)+436KJmol−1→H(g)+H(g)H_{2(g)} + 436KJmol^{- 1} \rightarrow H_{(g)} + H_{(g)}