What must be true for a spontaneous reaction in an electrochemical cell? The overall cell potential must be positive.
The overall cell potential must be negative.
The cathode’s standard reduction potential must be positive.
The cathode’s standard reduction potential must be negative.

T(s) in2os] (m) 0 185 2.39 546 1.90 725 1.70 the decomposition of n205 can be described by the equation 2.68 given these data for the reaction at 45°c in carbon tetrachloride solution, calculate the average rate of reaction for each successive time interval. ntr s to 185 s 185 s to 546 s 546 s to 725 s number number number reaction rate: m/s m/s m/s