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Question: For a reaction, \(2X(g) + 2Y(g) \to Z + 80kcal\), which combination of pressure and temperature give...

For a reaction, 2X(g)+2Y(g)→Z+80kcal2X(g) + 2Y(g) \to Z + 80kcal, which combination of pressure and temperature gives the highest yield of Z at equilibrium?
A.1000atm  and  500∘C  1000atm\;and\;500 \circ C\,\,
B.500atm  and  500∘C  500atm\;and\;500 \circ C\,\,
C.1000atm  and  100∘C  1000atm\;and\;100 \circ C\,\,
D.500atm  and  100∘C  500atm\;and\;100 \circ C\,\,

Explanation

Solution

Exothermic reactions are reactions or processes that release energy, usually within the kind of heat or light. In a chemical reaction, energy is released because the overall energy of the products is a smaller amount than the overall energy of the reactants. Heat is thought of as a product. For this reason, the change in enthalpy, which means an exothermic reaction will always be negative. The reaction can be expressed as below:
 Reactants→Products+Energy \,Reactants{{ }} \to {{ }}Products{{ }} + {{ }}Energy\,

Complete step by step answer:
The reaction is favoured within the forward direction at high pressure and at low temperature.
The forward reaction proceeds with a decrease in the number of moles during the course of the reaction. When the pressure is increased by decreasing the amount at a constant temperature, the forward reaction is going to be favoured. The forward reaction is additionally a chemical reaction as heat is liberated during the course of the reaction. When the temperature is lowered, the reaction will proceed within the forward direction so as to liberate heat and nullify the effect of lowering the temperature.
Hence, option (C) i.e 1000atm1000atm and 100∘C{100^ \circ }C is going to be the correct answer having maximum pressure and minimum temperature.

Note: A temperature change occurs when the temperature is increased or decreased by the flow of heat. This shifts the chemical equilibria toward the products or reactants, which can be determined by studying the reaction and deciding whether it is endothermic or exothermic. In a chemical reaction, energy is transferred into the environment instead of taking energy from the environment as in a chemical reaction.
-Within the presence of water, a robust acid will dissociate quickly and release heat, so it's a reaction
-If the temperature of a reaction is increased, the reaction will shift LEFT.
-If the temperature of a chemical reaction is decreased, the reaction will shift RIGHT.