When the total number of moles of reactants and products are equal then the equilibrium state is NOT disturbed by:
Correct answer: B. Pressure change
- A. Concentration change.
- B. Pressure change
- C. Temperature change.
- D. Catalyst.
Explanation
Pressure change: The equilibrium state of a reaction is not affected by pressure change if the total number of moles of reactants and products are equal. This is because the pressure of a gas is proportional to the number of moles of gas present. So, if the number of moles of gas on both sides of the equilibrium are equal, then the pressure will be the same on both sides and there will be no net change in the equilibrium state.
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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