Chemistry - Thermodynamics - II Question with Solution | TestHub
Nickel is purified by the Mond's process, which proceeds according to the equilibrium:
Given and at 25 ℃
Two chemists, A and B, analyze the equilibrium:
Chemist A argues that the above reaction will be spontaneous in the forward direction because the product is more stable than the reactants. Furthermore, if the temperature is raised, the reaction will take place in the reverse direction because it is an endothermic reaction.
Chemist B argues that the reaction is spontaneous in the reverse direction because entropy is higher for the reactants than for the products. Furthermore, if the temperature is raised, the spontaneity of the reverse reaction will increase.
Which of the following is a logical conclusion of Chemist A's argument
Options:
Answer:
Solution:
Chemist A chooses the direction of the reaction based upon chemical stability and then says that the direction will change at higher temperatures. This is tantamount to saying that the stability will switch at higher temperatures, which by the way is also correct. Option D is of course, a false statement. The entropy shown for the reaction is the entropy of the reaction. In other words, it is the entropy of the system, and not the entropy of the universe Chemist A is statement is correct and does not contradict the second law of thermodynamics. Statements and contradicted because Chemist A says that the reaction is temperature dependent.