Five moles of an ideal gas expands isothermally at 100°C to five times its initial volume. Find the heat flow into the system. A) 2.5 × 10⁴ J B) 1.1 × 10⁴ J C) 6.7 × 10³ J D) 2.9 × 10³ J E) 7.0 × 10² J

Question

Quizplus · Accepted Answer

The heat flow into the system during an isothermal expansion of an ideal gas can be calculated using the formula Q = nRT ln(Vf/Vi). Here, n = 5 moles, R = 8.314 J/mol·K, T = 373 K, and Vf/Vi = 5. Plugging in these values gives Q ≈ 2.5 × 10^4 J.

Five Moles of an Ideal Gas Expands Isothermally at 100°C