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Calorimetry

One mole of a...

Question

One mole of a real gas is subjected to a process from $(2 b a r, 30 l i t, 300 K)$ to $(2 b a r, 50 l i t, 400 K)$
Given: $C_{V} = 40 J / m o l K$ ,
$C_{P} = 50 J / m o l / K$
Calculate $Δ U$ .

4000 J

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2000 J

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1000 J

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5000 J

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Solution

The correct option is A $4000 J$
Change in internal energy is written as:
$Δ U = n C_{v} Δ T$
$Δ U = 1 \times 40 \times (400 - 300)$
$Δ U = 4000 J$

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