Question

Statement 1 : Many endothermic reactions that are not
spontaneous at room temperature become spontaneous at
high temperature.
Statement 2 : Entropy of the system increases with increase
in temperature. [AIIMS 2013]

Answer 1

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Answer 2

Statement I and Statement II is correct.

Step by step explanation:

• Energy is conserved in chemical reactions. The total energy of the system is the same before and after a reaction.
• Endothermic reaction is cooler than surrounding.
• Exothermic reaction is hotter than surrounding.
• The endothermic reaction is spontaneous on increasing temperature, and entropy often increases.

The given statements:

Statement 1 :

Many endothermic reactions that are not  spontaneous at room temperature become spontaneous at  high temperature.

Hence , the statement 1 is true.

Statement 2 :

Entropy of the system increases with increase  in temperature.

Hence , the statement 2 is true.

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