{"question": "Which of the following is considered an acid anhydride?", "options": ["HCl", "H2SO3", "SO2", "Al(NO3)3"], "answer": "C"}
{"question": "Which of the following is expected to be a polar molecule?", "options": ["PCl4F", "BF3", "CO2", "Si(CH3)4"], "answer": "A"}
{"question": "From the solubility rules, which of the following is true?", "options": ["All chlorides, bromides, and iodides are soluble", "All sulfates are soluble", "All hydroxides are soluble", "All ammonium-containing compounds are soluble"], "answer": "D"}
{"question": "A new compound is synthesized and found to be a monoprotic acid with a molar mass of 248 g/mol. When 0.0050 mol of this acid are dissolved in 0.500 L of water, the pH is measured as 3.89. What is the pKa of this acid?", "options": ["3.89", "7.78", "5.78", "2.33"], "answer": "C"}
{"question": "A solution contains 2.00 mole of acetic acid, CH3COOH, and 1.00 mole of calcium acetate, Ca(CH3COO)2. The solution is able to resist the addition of a small amount of strong acid or strong base with only minor changes in the pH of the solution. Larger quantities of strong acid or strong base can cause a significant change in pH. How many moles of nitric acid, HNO3, may be added before the pH begins to change significantly?", "options": ["0.500 mole", "1.00 mole", "2.00 mole", "3.00 mole"], "answer": "C"}