Questions 28 and 29 refer to the electrochemical cell pictured below. Volt- mete
ID: 1041209 • Letter: Q
Question
Questions 28 and 29 refer to the electrochemical cell pictured below. Volt- meter Wire Ag Salt Bridge 1 M Cd(NO3)2 1100 milliliters 1 M AgNOa 100 milliliters 28. /Consider the electrochemical cell pictured above. The thermodynamically favorable reaction that occurs when the cell above operates is: Zn(s) + Cu2 An electrolytic cell base represented above was c copper half-cells. The ob to be 1.00 volt instead of Eo, of 1.10 volts. Which correctly account for this 2 Ag + Cd(s) 2 Ag(s)+ Cd2 Which of the following occurs once current is allowed to flow for five minutes? Voltage increases. B) Voltage decreases. C) Voltage becomes zero and remains at zero. D) No change in voltage occurs. A) The copper electrode electrode.Explanation / Answer
As the reaction goes on, more electrons flow from anode to cathode and current will increase according to Farada's law:
Q = I *t
Where Q is the charge ( it depends on the total number of electrons flow)
I : current in ampere
t = time
And I = V*R where V is the voltage and R is the resistance
From the two equations, we get: Q = V*R*t
As, Q increases on increasing time, voltage V also increases.
Option A is the correct answer.
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