Assertion - Addition of Q and w gives - U-Reason - Addition of two path functions cannot give state function-

By first law of thermodynamics, Δ U = Q + w (work done on the system ) where, nbsp; Δ U is change in internal energy Q is heat transfered nbsp; w is workdon ...

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Standard XII

Chemistry

System, Surroundings, Intensive, Extensive Properties

Assertion : A...

Question

Assertion : Addition of Q and w gives $Δ U$ .
Reason : Addition of two path functions cannot give state function.

Both assertion and reason are true and reason is the correct explanation of assertion

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Both assertion and reason are true but reason is not the correct explanation of assertion

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Assertion is true but reason is false

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Both assertion and reason are false

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Solution

The correct option is C Assertion is true but reason is false
By first law of thermodynamics,
$Δ U = Q + w$ (work done on the system )
where,
$Δ U$ is change in internal energy
Q is heat transfered
w is workdone
Internal energy is a state function but Q and w are path functions.

Hence, option (c) is correct.

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Assertion : Addition of Q and w gives ΔU. Reason : Addition of two path functions cannot give state function.

Assertion : Addition of Q and w gives $Δ U$ .
Reason : Addition of two path functions cannot give state function.