MCAT General Chemistry Freestanding Practice Questions: Bonding and Intermolecular Forces

1. Na₂SO₄ is soluble in water. If NaCl(s) is added to a solution of Na₂SO₄(aq) so that the concentration of Na⁺ doubles, then the:

• A. PBr₃O
• B. PF₅
• C. CCl₄
• D. SF₆

2. The K_sp of NaCl in water is 35.9 at 25°C. If 500 mL of 12 M NaOH(aq) and 500 mL of 12 M HCl(aq) solution both at 25°C are combined, what would best describe the resulting solution?

• A. I only
• B. III only
• C. I and II
• D. I and III

3. The amino and carboxyl terminals of alanine lose protons according to the following equilibrium:

Which of the following indicators would be best used to determine the second equivalence point when alanine is titrated with sodium hydroxide?

• A. Ionic bonding
• B. Covalent bonding
• C. Van der Waals forces
• D. Induced dipole

4. Which of the following best characterizes the spontaneous half-reaction below under standard conditions?

Pd²⁺ + 2e^- → Pd

• A. NH₃
• B. NH₄⁺
• C. CO₂
• D. CH₄

5. An electrochemical cell is constructed using two inert electrodes in one chamber with an inert electrolyte. The binary compound ICl is dissolved in the electrolyte, current is applied, and I₂ and Cl₂ are produced. Which of the following statements is true?

• A. I > IV > II > III
• B. II > I > IV > III
• C. I > III > IV > II
• D. IV > III > I > II

6. Particles with opposite charges attract one another and particles with like charges repel. How can protons, which are positively charged, coexist in the nucleus?

• A. Gravitational forces
• B. Electrostatic forces
• C. London dispersion forces
• D. Strong nuclear forces

7. In VSEPR theory, T-shaped is a sub-class of the trigonal bipyramidal geometric family in which the central atom has exactly three atoms bound to it and two lone pairs of electrons. Which of the following molecules is T-shaped?

• A. Covalent
• B. Electrostatic
• C. Metallic
• D. Coordinate covalent