0, Calculate ?,Go for the following reaction at 425 °C HIg)H2(g)+ I2(g) iven K =
ID: 1044871 • Letter: 0
Question
0, Calculate ?,Go for the following reaction at 425 °C HIg)H2(g)+ I2(g) iven K = 0,018. (R = 8.314 J/K mol) 34 x 10 33 x 104 05 x 10 21. Which of the following statements is true concerning the voltaic cell Voltmetere No3 NO, Cu NOa Cur shown below? e Cu cathode mass increases as the cell discharges. The Cu anode mass decreases as the cell di The Cu anode mass increases as the cell discharges. The Cu cathode mass decreases as the cell disch The mass of the Cu electrode neither increases nor decreases as the cellExplanation / Answer
1.
Relation between,
deltaG0f = - R T lnK
= - 0.008314 * (425 + 273.15) * ln(0.018)
= 23.3 kJ
= 2.33 * 104 J
(d)
2.
(a) Cu cathode mass increases as the cell discharges.
Since at cathode reduction of Cu2+ ions takes place Cu is deposited.
Cu2+ (aq.) + 2 e- -----------> Cu (s)
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