At equilibrium, the concentrations of reactants and products are:
Correct answer: A. Constant
- A. Constant
- B. Different
- C. Maximum
- D. Equal
Explanation
Chemical equilibrium is a dynamic state where the rate of the forward reaction equals the rate of the reverse reaction. This results in no net change in the concentrations of reactants and products, so their concentrations remain constant over time.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise Chemical Equilibrium
625 free Chemical Equilibrium MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Chemical Equilibrium questions
For the reaction CO(g) + H₂O(g) ⇌ CO₂(g) + H₂(g), given ΔH° and ΔS° values at 300K and 1200K, the incorrect statement is:
All of the following are applications of K, EXCEPT:
Purification of table salt (NaCl) by passing HCl gas through its saturated aqueous solution is an example of:
Which of the following statements describes a reversible reaction at equilibrium?
For the homogeneous reaction, 4NH₃ + 5O₂ ⇌ 4NO + 6H₂O, the units of the equilibrium constant (K꜀) are:
One mole of HI was sealed in a tube and heated to 440°C. At equilibrium, HI was found to be 50% dissociated. The Kc for the reaction 2HI ⇌ H₂ + I₂ is: