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23 solutions

Spontaneous Reaction

Q. Determine which of the following pairs of reactants will result in a spontaneous reaction at 25°C. A) Pb2+(aq) + Cu(s) B) Ag+(aq) + Br⁻(aq) C) Li+(aq) + Cr(s) D) Fe3+(aq) + Cd(s) E) None of the above pairs will react.

Solved • Jul 25, 2019

Spontaneous Reaction

Q. The process of a cooked hamburger becoming raw is spontaneous. True or False? 1. True 2. False

Solved • Jul 22, 2019

Spontaneous Reaction

Q. Predict the spontaneity for reactions with the following free energy changes (a) ΔG = 0: spontaneous, nonspontaneous, at equilibrium (b) ΔG > 0: spontaneous, nonspontaneous, at equilibrium (c) ΔG < 0: spontaneous, nonspontaneous, at equilibrium

Solved • Jul 18, 2019

Spontaneous Reaction

Q. A reversible process is one that __________. A. can be reversed with no net change in either system or surroundings. B. must be carried out at high temperature. C. happens spontaneously. D. must be carried out at low temperature. E. is spontaneous in both directions.

Solved • Jul 16, 2019

Spontaneous Reaction

Q. Which of the following statements is true? A. Endothermic reactions can be spontaneous if there is an increase in enthalpy. B. Endothermic reactions can be spontaneous if there is a resultant increase in entropy. C. Endothermic reactions are always nonspontaneous. D. Spontaneous reactions are always fast.

Solved • Jul 16, 2019

Spontaneous Reaction

Q. A reaction at 10 K has ΔH° = –60.9 kJ/mol and ΔS° = 266.6 J/K. Is this reaction spontaneous or nonspontaneous? At what temperature (if any) can the spontaneity be reversed? A. spontaneous, can be made nonspontaneous at 228.4 K. B. nonspontaneous, can be made spontaneous at 228.4 K. C. spontaneous, cannot be made nonspontaneous at any temperature. D. nonspontaneous, cannot be made spontaneous at any temperature.

Solved • Jul 16, 2019

Spontaneous Reaction

Q. Select all that apply. Which of the following processes are spontaneous? (a) A satellite falls to Earth. (b) Water decomposes to H2 and O2 at 298K and 1 atm. (c) Average car prices increase.

Solved • Jun 28, 2019