Question 38: Thermodynamics & KTG

Question

The heat required to increase the temperature of 4 moles of a mono-atomic ideal gas from $273^{\circ} \mathrm{C}$ to $473^{\circ} \mathrm{C}$ at constant volume is

Accepted Answer

First, note that for a mono-atomic ideal gas at constant volume
Ã¢ÂÂ¢  $C_v = 	frac{3}{2}R$
Ã¢ÂÂ¢  $\Delta T = (473^\circ\!C - 273^\circ\!C) = 200\ \mathrm K$
So the heat input is
$$ Q \;=\; n\,C_v\,\Delta T    \;=\; 4\;	imes\;\frac{3}{2}R\;	imes\;200    \;=\;1200\,R. $$
Answer: Option C (1200 R).

Answer

1600 R

Answer

600 R

Answer

1200 R

Answer

400 R

Thermodynamics & KTG

The heat required to increase the temperature of 4 moles of a mono-atomic ideal gas from 273^{\circ} \mathrm{C} to 473^{\circ} \mathrm{C} at constant volume is

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