Consider the Following Substitution Reaction with a ΔG° Value of -91.1

question 69

Multiple Choice

Consider the following substitution reaction with a ΔG° value of -91.1 kJ/mole.
HO- + CH₃Cl ↔ CH₃OH + Cl-
Given this information which of the following statements must be true? (R = 8.315 J/mole K)

• A) The Keq at 25°C for this reaction is very large, in other words this reaction proceeds to near completion as written, left to right under standard conditions.
• B) The Keq at 25°C for this reaction is very small (<1), in other words this reaction does not proceed from left to right but rather is favored from right to left under standard conditions .
• C) At 250°C the equilibrium concentration is shifted right in favor of the products (CH₃OH and Cl-). In other words there is more product than at 25°C.
• D) At 250°C the equilibrium concentration of products and reactants is nearly the same.
• E) Both A and C are correct.

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