1. The research and development unit of a chemical company is studying the reaction of CH4 and H2S, two components of natural gas. CH4(g) + 2H2S(g) + CS2(g) + 4H2(g) In one experiment, 1.00mol of CH4, 1.00mol of CS2, 2.00mol of H2S, and 2.00mol of H2 are mixed in a 250-mL vessel at 9600C. At this temperature, Kc 0.036. (a) In which direction will the reaction proceed to reach equilibrium? (b) If [CH4] = 5.56M at equilibrium, what are the equilibrium concentrations of the other substances? %3D
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.
![1. The research and development unit of a chemical company is studying the reaction of CH4 and H2S,
two components of natural gas.
CH4(g)
+ 2H2S(g) → CS2(g) +
4H2(g)
In one experiment, 1.00mol of CH4, 1.00mol of CS2, 2.00mol of H2S, and 2.00mol of H2 are mixed in a
250-mL vessel at 9600C. At this temperature, Kc = 0.036.
(a) In which direction will the reaction proceed to reach equilibrium?
(b) If [CH4] = 5.56M at equilibrium, what are the equilibrium concentrations of the other substances?
%3D
2. Hydrogen iodide decomposes according to the equation
2HI(g) + H2(g) + 12(g).
for which Kc = 0.0156 at 400°C. A 0.550 mol HI was injected into a 2.00 L reaction vessel at 400°C.
Calculate the concentration of HI at equilibrium.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F11a86329-1f33-47be-8394-b3a927be2982%2Fa9948914-6338-4b10-b092-4ff73c3d4996%2Fn5oc4d_processed.jpeg&w=3840&q=75)
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 2 images
