A chemical reaction A → B is said to be in equilibrium when:
Correct answer: C. Rate of transformation of A to B is equal to B to A
- A. Conversion of A to B is 50% complete
- B. 50% reactant has been changed to B
- C. Rate of transformation of A to B is equal to B to A
- D. Complete conversion of A to B has taken place
Explanation
When a chemical reaction is in equilibrium, it means that the rate at which A transforms into B is equal to the rate at which B transforms back into A. It's like a balanced dance where the number of people moving forward and backward is the same, creating a steady state.
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About Reversible Reactions
A reversible reaction proceeds in both forward and backward directions, so reactants and products continue changing until dynamic equilibrium is established. The topic covers the meaning of equilibrium, the equality of forward and reverse rates, and how concentration, pressure and temperature disturb equilibrium, which is separate from the rate at which equilibrium is reached.
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