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Standard XII

Chemistry

Heat of Reaction

An isolated b...

Question

An isolated box, equally partitioned contains two ideal gases $A$ and $B$ as shown
When the partition is removed, the gases mix. The changes in enthalpy $(Δ H)$ and entropy $(Δ S)$ in the process, respectively, are:ositive, zero

Zero, positive

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Zero, negative

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Positive, zero

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Negative, zero

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Solution

The correct option is A Zero, positive
Ideal gas $Δ H = 0$
$Δ S > 0$
(randomness increases)

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An isolated box, equally partitioned contains two ideal gases A and B as shownWhen the partition is removed, the gases mix. The changes in enthalpy (ΔH) and entropy (ΔS) in the process, respectively, are:ositive, zero

The correct option is A Zero, positiveIdeal gas ΔH=0 ΔS>0 (randomness increases)

An isolated box, equally partitioned contains two ideal gases $A$ and $B$ as shown
When the partition is removed, the gases mix. The changes in enthalpy $(Δ H)$ and entropy $(Δ S)$ in the process, respectively, are:ositive, zero

The correct option is A Zero, positive
Ideal gas $Δ H = 0$
$Δ S > 0$
(randomness increases)