GC2.3.7 The research and development unit of a chemical company is studying the reaction of CH4 and H₂S, two components of natural gas: CH₂(g) + 2H₂S(g) = CS₂(g) + 4H₂(g) In one experiment, 1.00 mol CH4, 1.00 mol CS2, 2.00 mol H₂S, and 2.00 mol H₂ are mixed in a 250 mL vessel at 960 °C. At this temperature, K = 0.036. (a) Determine K.
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![GC2.3.7 The research and development unit of a chemical company is studying the reaction of
CH4 and H₂S, two components of natural gas:
CH₂(g) + 2H₂S(g) — CS₂(g) + 4H₂(g)
In one experiment, 1.00 mol CH4, 1.00 mol CS₂, 2.00 mol H₂S, and 2.00 mol H₂ are mixed in a
250 mL vessel at 960 °C. At this temperature, Kc = 0.036.
(a) Determine K.
(b) In which direction will the reaction proceed to reach equilibrium?
(c) If [CH₂] = 5.56 M at equilibrium, what are the concentrations of the other substances?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb234898a-ca00-4740-ae3d-79576f672843%2Fd0375ec5-9dd7-44ca-b2ab-4d063077b99b%2Fujryvi_processed.jpeg&w=3840&q=75)
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