Author Question: An ideal gas is expanded at constant temperature. What are the signs (+, -, or 0) of H, S, and G for ... (Read 26 times)

jwb375 · **on:** Feb 15, 2020

Question 1

The figure represents the spontaneous evaporation of nitrogen in which liquid nitrogen, N2(l), becomes gaseous nitrogen, N2(g): N2(l) → N2(g). What are the signs (+ or -) of ΔH, ΔS, and ΔG for this process?

◦ ΔH = +, ΔS = +, ΔG = +
◦ ΔH = -, ΔS = -, ΔG = +
◦ ΔH = -, ΔS = -, ΔG = -
◦ ΔH = +, ΔS = +, ΔG = -

Question 2

An ideal gas is expanded at constant temperature. What are the signs (+, -, or 0) of ΔH, ΔS, and ΔG for this system?

◦ ΔH = 0, ΔS = +, ΔG = -
◦ ΔH = -, ΔS = +, ΔG = -
◦ ΔH = 0, ΔS = -, ΔG = +
◦ ΔH = +, ΔS = -, ΔG = +

milbourne11 · **Reply #1 on:** Feb 15, 2020

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