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Answer: The reaction between ethyl iodide and hydroxide
Chapter , Problem 118AE(choose chapter or problem)
Problem 118AE
The reaction between ethyl iodide and hydroxide ion in ethanol (C2H5OH) solution. C2H5I(a/c) + OH- (a/c)→ C2H5OH(/) + I - (ale), has an activation energy of 86.8 kJ/mol and a frequency factor of 2.10 x 1011 M-1 s-1. (a) Predict the rate constant for the reaction at 35 °C. (b) A solution of KOH in ethanol is made up by dissolving 0.335 g KOH in ethanol to form 250.0 mL of solution. Similarly. 1.453 g of C2H5I is dissolved in ethanol to form 250.0 mL of solution. Equal volumes of the two solutions are mixed. Assuming the reaction is first order in each reactant, what is the initial rate at 35 °C? (c) Which reagent in the reaction is limiting, assuming the reaction proceeds to completion? (d) Assuming the frequency factor and activation energy do not change as a function of temperature, calculate the rate constant for the reaction at 50 °C.
Questions & Answers
QUESTION:
Problem 118AE
The reaction between ethyl iodide and hydroxide ion in ethanol (C2H5OH) solution. C2H5I(a/c) + OH- (a/c)→ C2H5OH(/) + I - (ale), has an activation energy of 86.8 kJ/mol and a frequency factor of 2.10 x 1011 M-1 s-1. (a) Predict the rate constant for the reaction at 35 °C. (b) A solution of KOH in ethanol is made up by dissolving 0.335 g KOH in ethanol to form 250.0 mL of solution. Similarly. 1.453 g of C2H5I is dissolved in ethanol to form 250.0 mL of solution. Equal volumes of the two solutions are mixed. Assuming the reaction is first order in each reactant, what is the initial rate at 35 °C? (c) Which reagent in the reaction is limiting, assuming the reaction proceeds to completion? (d) Assuming the frequency factor and activation energy do not change as a function of temperature, calculate the rate constant for the reaction at 50 °C.
ANSWER:Problem 118AEThe reaction between ethyl iodide and hydroxide ion in ethanol (C H OH) solution. C2H I(alc2 +5 5 - -OH (alc) C H O2l5+ I (alc), has an activation energy of 86.8 kJ/mol and a frequency factor 11 -1 -1of 2.10 x 10 M s . (a) Predict the rate constant for the reaction at 35 °C. (b) A solution ofKOH in ethanol is made up by dissolving 0.335 g KOH in ethanol to form 250.0 mL of solution.Similarly. 1.453 g of C H I is2i5olved in ethanol to form 250.0 mL of solution. Equal volumes ofthe two solutions are mixed. Assuming the reaction is first order in each reactant, what is theinitial rate at 35 °C (c) Which reagent in the reaction is limiting, assuming the reactionproceeds to completion (d) Assuming the frequency factor and activation energy do notchange as a function of temperature, calculate the rate constant for the reaction at 50 °C. Step-by-step solution Step 1 of 8 The given reaction is C2H I5alc) + OH (alc) C H OH2l5 + I (alc)Activation energy of the reaction, E = 86.8 kJ/mol a 3 = 86.8 kJ/mol x 10 J 1 kJ 3 = 86.8 x 10 J/molFrequency factor, A = 2.10 x 10 11M s -1