AP MCQ 09ABCDEF PART 2 Question 01: Which of the following is associated with a very large magnitude, negative value for ∆G°? A large K value A small K value A K value = 0 A K value = 1 Question 02: When the equilibrium constant is found to heavily favor reactants, what is the consequence for the numerical values of K and ln K? K is negative and ln K is less than 1 K is positive and ln K is less than 1 K is less than 1 and ln K is positive K is less than 1 and ln K is negative Question 03: What does a value of ∆G° that is close to 0, tell us about the ratio of products to reactants in the equilibrium mixture? Products highly favored Reactants highly favored Products and reactants approx. equalled favored There are zero products in the reaction mixture Question 04: Dichromate(VI) ions (orange) can be converted to chromate(VI) ions (yellow) by adding water. The equilibrium below can be established. It is observed that a certain reaction mixture is bright orange. What does that observation tell us about the value of K? Cr2O72-(aq) + H2O(l) ⇌ 2CrO42-(aq) + 2H+(aq) It is relatively large It is relatively small It is approximately = 1 Nothing Question 05: If the value for ∆G° is close to 0, what does this tell us about ln K? It must be close to 0 It must be close to 1 It is very large It is very small Δ
