What will be the effect upon the equilibrium if the pressure on the system is in
ID: 953620 • Letter: W
Question
What will be the effect upon the equilibrium if the pressure on the system is increased? What will be the effect upon the concentration of CH_4 if the concentration of H_2 is decreased? What will be the effect upon the equilibrium if the concentration of H_2 is decreased? What will be the effect upon the concentration of H_2 S if the concentration of CS_2 is increased? What will be the effect upon the equilibrium if H_2 is removed and CH_4 is added? What will be the effect upon the concentration of H_2 if the concentration of CS_2 is increased? What will be the effect upon the equilibrium if the temperature and the concentration of H_2 increases? What will be the effect upon the concentration of CH_4 if the temperature is increased? What will be the effect upon the equilibrium if the concentration of CH_4 is decreased and CS_2 is increased? What will be the effect upon the equilibrium if a catalyst is added?Explanation / Answer
In this question we use the Le Chatellier’s Principle. It states that when an equilibrium is disturbed by any mean it always tries reestablish by change in for example, pressure , concentration, temperature etc.
Lets use this principle to answer the question.
1.
When pressure in increased then the reaction goes to the direction where number of moles of species are less.
In the given reaction, total moles of reactant gases are less then product so the avoid stress it would be to the reactant side.
Answer :
D. Equilibrium shift left
2.
As when we increase the concentration of reactants reaction should go to the right to side to achieve equilibrium.
So the concentration of H2 will increase.
A. Increase.
3.
When the concentration of H2 is decreased then also reaction goes to the right side to reestablish the equilibrium.
E. Shift right
4.
When concentration of product side is increased then the concentration of reactant should be increased.
D. Shift left
5.
CH4 is to the reactant side so when its concentration is increased then reaction goes to right side. Also when H2 which is towards the product side is decreased then reaction goes to the right side.
So overall change is to the right side.
E. Shift right.
6.
A. increase
7.
The reaction has delta H less than 0 so the reaction is exothermic. When we increase the temperature then reaction goes to the left side and when we increase the concentration of H2 then reaction goes to the left as well. So overall equilibrium goes to the left side.
D. shift left
8
As we said that reaction prefers to go the reactant side when we increase the temperature so there is more CH4 formed.
A. Increase
9
D. shift left
10.
Catalyst does not make any changes in equilibrium so it can not be determined.
F. Can not be determined.
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