Under which of the following conditions is the relation- - H - U - P - Vvalid for a closed system-A- At constant temperatureB- At constant volume and pressureC- At constant volumeD- At constant pressure

The correct option is D At constant pressureWe know enthalpy change is given as: Δ H= Δ U + nbsp; Δ (PV) Δ H= Δ U + P Δ V nbsp; + V nbsp;Δ P At constant ...

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Standard XII

Chemistry

Properties of Enthalpy

Under which o...

Question

Under which of the following conditions is the relation,
$Δ H = Δ U + P Δ V$
valid for a closed system.

At constant pressure

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At constant volume

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At constant temperature

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At constant volume and pressure

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Solution

The correct option is A At constant pressure
We know enthalpy change is given as:
$Δ H = Δ U + Δ (P V)$
$Δ H = Δ U + P Δ V + V Δ P$
At constant pressure,
$Δ P = 0$ ,
so, $Δ H = Δ U + P Δ V$

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Under which of the following conditions is the relation, ΔH=ΔU+PΔV valid for a closed system.

The correct option is A At constant pressureWe know enthalpy change is given as: ΔH=ΔU+Δ(PV) ΔH=ΔU+PΔV+VΔP At constant pressure, ΔP=0, so, ΔH=ΔU+PΔV

Under which of the following conditions is the relation,
$Δ H = Δ U + P Δ V$
valid for a closed system.

The correct option is A At constant pressure
We know enthalpy change is given as:
$Δ H = Δ U + Δ (P V)$
$Δ H = Δ U + P Δ V + V Δ P$
At constant pressure,
$Δ P = 0$ ,
so, $Δ H = Δ U + P Δ V$