General Chemistry, Second-Term Practice Items

What is the molar concentration of a 2.52 m aqueous sugar (sucrose, C₁₂H₂₂O₁₁) solution?

Other than dispersion forces, what is the predominant intermolecular force present in a solution of methanol and carbon tetrachloride?

In order to determine the change in freezing point of 5.0 g of NaCl in 75 g of water, what needs to be included in the calculation?

You have two solutions both at 25°C: (1) 50.0 g of KBr in 100 g of water (2) 50.0 g of KNO₃ in 100 g of water Using the solubility curve shown, which statement is true?

A series of experiments were carried out for a reaction: 2A + B → C. Based on the data, what is the rate law?

There are two reactions with the two rate constants shown to the right. What can you conclude about these reactions?

The first-order, radioactive decay of nitrogen-16 is 7.1 seconds. What fraction of a sample of nitrogen remains after 3 half-lifes (or 21.3 seconds) has elapsed?

For a reaction, a series of experiments were carried out, and the rate of the reaction was measured over time. The generic reaction is: A → products. Which statement is correct?

Which mechanism is consistent with the energy diagram?

For the energy diagram shown, what are the relationships between the activation energies (Ea1 and Ea2) and the rate constants (k1 and k2)?