At constant volume, 4 mol of an ideal gas when heated from 300 K to 500 K changes its internal energy by 5000 J. The molar heat capacity at constant volume is?

Question

At constant volume, 4 mol of an ideal gas when heated from 300 K to 500 K changes its internal energy by 5000 J. The molar heat capacity at constant volume is?, 3.125, 6.25, 6.75, -6.75

MARKS App · Accepted Answer

Given Δ U = 5000 n = 4 Δ T = ( 500 - 300 ) Using Δ U = n C v Δ T 5000 = 4 × C v ( 500 – 300 ) C v = 6.25 J k – 1 m o l – 1

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