Question

What is meant by 'reversible changes ' and ' irreversible changes'explain with an example

Answer 1

heya frnd

reversible reactions are reaction which can be reversible

for suppose melting is reversible because by cooling water it can get it original state I.e ice

irreversible reactions are reactions that can't be reversible

for suppose burning of paper

after burning paper , we can get ash . with ash we can't make paper right . so it is irreversible

hope it helps u

Answer 2

Hi friend here is your answer

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Reversible Process

A thermodynamic process is reversible if the process can return back in such a that both the system and the surroundings return to their original states, with no other change anywhere else in the universe. It means both system and surroundings are returned to their initial states at the end of the reverse process.

Example -- (i) Frictionless relative motion. (ii) Expansion and compression of spring.

Irreversible Process

Irreversible processes are a result of straying away from the curve, therefore decreasing the amount of overall work done. An irreversible process is a thermodynamic process that departs from equilibrium. In terms of pressure and volume, it occurs when the pressure (or the volume) of a system changes dramatically and instantaneously that the volume (or the pressure) do not have the time to reach equilibrium.

Example -- (i) Relative motion with friction (ii) Combustion

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