Refer to the following energy diagram for problems 82 through 84. What is Delta
ID: 514342 • Letter: R
Question
Refer to the following energy diagram for problems 82 through 84. What is Delta G for this reaction? a. +6 kcal b. +10 kcal c. +19 kcal d. -6 kcal e. 15 kcal What is the activation energy (E_c) for this reaction? a. +4 kcal b. +6 kcal c. +10 kcal d. +15 kcal e. +19 kcal In the reverse direction, this reaction is _____ and Delta G is _____. a. not spontaneous, +9 kcal b. not spontaneous, +15 kcal c. spontaneous -6 kcal. d. spontaneous, -9 kcal e. spontaneous -15 kcal Exothermic means a. heat is a product and Delta HExplanation / Answer
82)
delta G = G of product - G of raectant
= 15 kcal - 9 kcal
= 6 kcal
Answer: a
83)
Ea = energy of activated complex - energy of reactant
= 19 kcal - 9 kcal
= 10 Kcal
Answer: c
84)
for reverse direction:
delta G = 9 kcal - 15 kcal
= -6 kcal
since delta G is negative, the reaction is spontaneous
Answer: c
85)
exothermic means heat is released
heat is a product
delta H < 0
Answer: a