A 2.75 L container filled with CO₂ gas at 25 °C and 2.25 bar springs a leak. When the container is resealed, the pressure is 1.85 bar and the temperature is 10 °C. How many moles of gas were lost? A) 0.0 335 mol B) 0. 728 mol C) 0. 882 mol D) 3.39 mol

Question

Quizplus · Accepted Answer

Using the ideal gas law, calculate the initial and final moles of gas, then find the difference. Initial moles: n1 = (2.25 bar * 2.75 L) / (0.08314 L·bar/mol·K * 298 K) = 0.251 mol. Final moles: n2 = (1.85 bar * 2.75 L) / (0.08314 L·bar/mol·K * 283 K) = 0.217 mol. Moles lost: 0.251 mol - 0.217 mol = 0.034 mol.

A 275 L Container Filled with CO2 Gas at 25 °C

A 275 L Container Filled with CO₂ Gas at 25 °C