Q. 175.0( 1 Vote )

The spontaneity m A. the flow of heat from colder to a warmer body.

B. gas in a container contracting into one corner.

C. gas expanding to fill the available volume.

D. burning carbon in oxygen to give carbon dioxide.

Answer :

Reason: Spontaneous Reaction is those reactions which occur on its own without being helped by any external source.

(i) heat always flows from a higher temperature to a lower temperature.


(ii) There is always a pressure gradient require for gas to move.


(iii) This can be possible as gas moves from high pressure to low pressure.


(iv) These processes can occur on its own does not require any external assistance.

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