MDCAT Chemistry MCQ #2245

In a closed vessel, a reversible chemical reaction reaches a state where macroscopic properties like color and pressure remain unchanged. What characterizes this state?

MDCAT Chemistry MCQ #2245

  1. Question 1

    Q1. In a closed vessel, a reversible chemical reaction reaches a state where macroscopic properties like color and pressure remain unchanged. What characterizes this state?

    • A) The concentrations of reactants and products become exactly equal
    • B) The rates of forward and reverse reactions become equal
    • C) The reaction stops completely and no further change occurs
    • D) The concentration of products becomes much higher than reactants

    Answer: The rates of forward and reverse reactions become equal

    Explanation: Dynamic equilibrium occurs when forward and reverse rates are equal. Option A is wrong because concentrations become constant, not necessarily equal.