Problem: When a system is at equilibrium,________.A) the process is not spontaneous in either directionB) the reverse process is spontaneous but the forward process is notC) the forward and the reverse processes are both spontaneousD) the forward process is spontaneous but the reverse process is notE) both forward and reverse processes have stopped

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We're being asked to complete the following sentence: When a system is at equilibrium,________.


A reaction reaches equilibrium once the rate of the forward reaction equals the rate of the reverse reaction. Once at equilibrium there is no net change in the concentration of reactants or products. 


Recall that if:

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Problem Details

When a system is at equilibrium,________.

A) the process is not spontaneous in either direction

B) the reverse process is spontaneous but the forward process is not

C) the forward and the reverse processes are both spontaneous

D) the forward process is spontaneous but the reverse process is not

E) both forward and reverse processes have stopped

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What scientific concept do you need to know in order to solve this problem?

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