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2 August, 21:57

When a reaction is at equilibrium and more reactant is added, which of the following changes is the immediate result? Group of answer choices

The forward reaction rate increases.

The reverse reaction rate increases.

The reverse reaction rate remains the same.

The forward reaction rate remains the same

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  1. 2 August, 22:07
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    The forward reaction rate increases.

    Explanation:

    Consider the following reaction.

    Chemical reaction:

    A + B ⇄ C + D

    In this reaction the equilibrium is disturb by increasing the concentration of reactant B.

    When the concentration of reactant B is increased the system will proceed in forward direction in order to regain the equilibrium. Because when reactant concentration is high it means reaction is not on equilibrium state. As the concentration of B increased the reaction proceed in forward direction to regain the equilibrium state.

    According to the Le - Chatelier principle,

    At equilibrium state when stress is applied to the system, the system will behave in such a way to nullify the stress.

    The equilibrium can be disturb,

    By changing the concentration

    By changing the volume

    By changing the pressure

    By changing the temperature
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