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Standard XII

Chemistry

Introduction

Consider the ...

Question

Consider the following statements:
(a) q is a state function in an isochoric process
(b) W is a state function in an adiabatic process
(c) The work done by the system will be zero in an adiabatic free expansion

Correct among the following is/are:

(a) only

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(b) only

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(b) and (c)

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(a), (b) and (c)

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Solution

The correct option is D (a), (b) and (c)
$Δ U = q + w$ , $w = - P_{e x t} Δ V$

$q = Δ U$ in an isochoric process as $Δ V = 0$ .

$w = Δ U$ in an adiabatic process as $q = 0$ .

$P_{e x t} = 0$ in an adiabatic free expansion.

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Consider the following statements: (a) q is a state function in an isochoric process (b) W is a state function in an adiabatic process (c) The work done by the system will be zero in an adiabatic free expansion Correct among the following is/are:

The correct option is D (a), (b) and (c)ΔU=q+w, w=−PextΔV q=ΔU in an isochoric process as ΔV=0. w=ΔU in an adiabatic process as q=0. Pext=0 in an adiabatic free expansion.

Consider the following statements:
(a) q is a state function in an isochoric process
(b) W is a state function in an adiabatic process
(c) The work done by the system will be zero in an adiabatic free expansion

Correct among the following is/are:

The correct option is D (a), (b) and (c)
$Δ U = q + w$ , $w = - P_{e x t} Δ V$

$q = Δ U$ in an isochoric process as $Δ V = 0$ .

$w = Δ U$ in an adiabatic process as $q = 0$ .

$P_{e x t} = 0$ in an adiabatic free expansion.