The temperature of 2.00 mol Ne(g) is increased from 25^{$\omicron $}C to 200^{$\omicron $}C at constant pressure. Calculate the change in the entropy of neon (assume ideal behavior).

Question

Quizplus · Accepted Answer

The change in entropy can be calculated using the formula:
ΔS = nCvln(T₂/T₁)
where n is the number of moles, Cv is the molar heat capacity at constant volume, T₁ and T₂ are the initial and final temperatures in Kelvin.

For neon, Cv = (3/2)R, where R is the gas constant.
ΔS = 2(3/2)Rln(473/298) = 19.2 J/K

Therefore, the best choice is B, which matches the calculated value.

The Temperature of 2 ο\omicron ο C to 200 ο\omicron ο C at Constant Pressure

The Temperature of 2 $\omicron$ C to 200^$\omicron$C at Constant Pressure