APFIVE Voltaic Cell Voltage and Equilibrium
In a voltaic cell experiment, a student observes a decrease in voltage over time and concludes that the reaction quotient (Q) is approaching the equilibrium constant (K), leading to zero voltage. What is the mistake in this conclusion?
A
An increase in Q always increases the cell voltage, regardless of K.
B
Decreasing voltage indicates the cell is moving away from equilibrium.
C
Voltage decreases as Q approaches K, but it does not drop to zero until Q equals K.
D
Voltage is independent of the reaction quotient in voltaic cells.
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