For an ideal gas C p - C v- where C p is the molar specific heat at constant pressure and C V - molar specific heat at constant volume- Mark reason behind Cp-CvA- Molecules of gas are of negligible sizeB- Motion of gas molecules is randomC- Gas expands on heatingD- No inter molecular force

The correct option is C Gas expands on heatingQ=Δ U + W For isobaric nC_p Δ T = nC_v Δ T + P Δ V nbsp;(P Δ V is positive) nC_p Δ T gt; nC_v Δ T C_p gt ...

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Standard XII

Chemistry

Properties of Enthalpy

For an ideal ...

Question

For an ideal gas $C_{p} > C_{v}$ , where $C_{p}$ is the molar specific heat at constant pressure and $C_{v} =$ molar specific heat at constant volume.
Mark reason behind $C_{p} > C_{v}$

Gas expands on heating

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Molecules of gas are of negligible size

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Motion of gas molecules is random

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No inter molecular force

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Solution

The correct option is A Gas expands on heating
$Q = Δ U + W$
For isobaric
$n C_{p} Δ T = n C_{v} Δ T + P Δ V$ ( $P Δ V$ is positive)
$n C_{p} Δ T > n C_{v} Δ T$
$C_{p} > C_{v}$
$P Δ V$ is positive because gas expands on heating

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For an ideal gas Cp>Cv, where Cp is the molar specific heat at constant pressure and Cv= molar specific heat at constant volume. Mark reason behind Cp>Cv

The correct option is A Gas expands on heatingQ=ΔU+W For isobaric nCpΔT=nCvΔT+PΔV (PΔV is positive) nCpΔT>nCvΔT Cp>Cv PΔV is positive because gas expands on heating

For an ideal gas $C_{p} > C_{v}$ , where $C_{p}$ is the molar specific heat at constant pressure and $C_{v} =$ molar specific heat at constant volume.
Mark reason behind $C_{p} > C_{v}$

The correct option is A Gas expands on heating
$Q = Δ U + W$
For isobaric
$n C_{p} Δ T = n C_{v} Δ T + P Δ V$ ( $P Δ V$ is positive)
$n C_{p} Δ T > n C_{v} Δ T$
$C_{p} > C_{v}$
$P Δ V$ is positive because gas expands on heating