Select the energy diagram or diagrams that illustrate reactions in which the second step is rate determining. A Free Energy Free Energy [Reaction A Reaction B Reaction C Reaction Coordinate Reaction D D Free IMM Energy B Reaction Coordinate Free Energy Reaction Energy Diagrams Reaction Coordinate Reaction Coordinate

Considering each of the following values and neglecting entropy, tell whether the starting material or product is favored at equilibrium: (a) ?H° = 80 kJ/mol; (b) ?H° = -40 kJ/mol.

Compound A is heated in methanol B to give product C. a. Draw product C and provide a detailed mechanism for its formation. OSO₂CH3 + CH3OH A A B C

Consider the reaction coordinate diagram shown. Which step has the greatest rate constant going in the forward direction? Free Energy O O A E going to F OC going to E E going to G OC going to A A going to C C D Progress of rxn E F

1. For a reversible reaction at an equilibrium: A. The rate of the reaction forward is the same as that of the reaction in reverse. B. The rate constant for the reaction forward is the same as that for the reverse. C. The free energy of substrate is the same as that of product. D. No conversion of substrate to product, and product to substrate occurs. E. Position of an equilibrium does not depend on substrate and product concentration, only on the magnitude of equilibrium constant.

What is the effect of halving the amount of ethanol for this reaction? HO, Br heat A. the reaction rate decreases by half B. C. D. the reaction rate stays the same the reaction rate doubles the reaction rate quadruples