calculate delta g for the reaction between i2s and braq in s

calculate delta g for the reaction between i2(s) and br-(aq) in scientific notation

Solution

I2 & 2e- --> 2 I- Eo = +0.536 volts
2Br- --> Br2 & 2e- Eo = -1.065 volts

Eo = - 0.529 volts
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find dGo, using the Eo &:
dGo = -nFEo
dGo = - 2 e- (96.5kJ)(- 0.529)
dGo = + 102.097 kJ

your answer (3 sigfigs): dGo = + 102 kJ
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find K , using dGo which used standard voltages (ie @ 25 Celsius)
dG = -RTlnK
102000 Joules = - (8.314 Joules etc)(298Kelvin) lnK
ln K = - 4.117
K = 61.37