CHEM101 Graded Exam 3 Topic 14: Acid-Base Equilibria and Solubility Equilibria FALL 2023

What are the units of the constant a in the van der Waals equation? Select one: A. atm B. L • atm/K • mol C. L/mol D. L2 • atm/mol2 What is the final temperature of a gas that expands from a volume of 22.4 L at 278 K to a volume of 38.3 L at constant pressure? Select one: A. 163 K B. 3.09 K C. 475 K D. 294 K E. 217 K My Account Question 3 Correct 5.00 points out of 5.00 Question 4 Correct 5.00 points out of 5.00 Question 5 Correct 5.00 points out of 5.00 A sample of carbon dioxide gas at 125°C and 248 torr occupies a volume of 275 L. What will the gas pressure be if the volume is increased to 321 L at 125°C? Select one: A. 441 torr B. 356 torr C. 212 torr D. 289 torr E. 359 torr A sample of gas occupies 24.5 L at a pressure of 1.57 atm. What is the pressure if the volume is increased to 48.3 L at constant temperature? Select one: A. 5.38 × 10–4 atm B. 1.26 atm C. 0.796 atm D. 3.10 atm E. 1.86 × 103 atm A sample of a gas occupies 1.40 L at 25°C and 760 mmHg. What volume will it occupy at the same temperature and 380 mmHg? Select one: A. 0.700 L B. 2.8 L C. 1.05 L D. 1.40 L E. 2.10 L Question 6 Correct 5.00 points out of 5.00 Question 7 Correct 5.00 points out of 5.00 Question 8 Incorrect 0.00 points out of 5.00 What is the mass, in grams, of 2.74 L of CO gas measured at 33°C and 945 mmHg? (R = 0.08206 L • atm/mol • K, 1 atm = 760 mmHg) Select one: A. 206 g B. 0.263 g C. 3.80 g D. 35.2 g E. 2.46 g Which substance has the highest vapor pressure at room temperature?