Ap Chemistry Unit 9 Progress Check:mcq Study Guide Graded A+

The chemical equation above represents the combustion of glucose, and the table provides the approximate standard absolute entropies, S°, for some substances. Based on the information given, which of these equations can be used to calculate an approximation of S° for H2O(g) ? {Ans: B}The graphs above represent the changes in concentration over time for the reactant and product of two separate reactions at 25°C. Based on these graphs, which of the following best supports the claim that reaction 1 is thermodynamically favorable but reaction 2 is not? {Ans: A}Under standard conditions, a Ni-Cd galvanic cell generates a potential of +0.15V using the chemical reaction represented above. Which of the following best explains how [Ni2+]>1M affects the cell potential if this is the only change made to the operation of the galvanic cell? {Ans: A}An ice cube at 0°C melts when placed inside a room at 22°C (295K). Based on the concepts of enthalpy, entropy, and Gibbs free energy, which of the following best explains why the process is thermodynamically favorable? {Ans: D}In an experiment done at a low temperature, one hour after the reaction started, Y was produced but almost no Z was produced. At