Consider the galvanic cell shown below (the contents of each half-cell are writt
ID: 588071 • Letter: C
Question
Consider the galvanic cell shown below (the contents of each half-cell are written beneath each compartment) Pt 3+ 0.50 M Br2 0.10 M Br 0.20 M Cr The standard reduction potentials are as follows E" =-0.73 V Ee = +1.09 V C()3e Cris) Br2(aq) + 2e-2Br(aq) Which of the following statements about this cell is false? Select one: This is a galvanic cell. b. The cell is not at standard conditions. 0 C. Electrons flow from the Pt electrode to the Cr electrode. d. Reduction occurs at the Pt electrode. e. To complete the circuit, cations migrate into the left half-cell and anions migrate into the right half-cell from the salt bridge.Explanation / Answer
Answer: c) electrons flow from the Pt electrode to the Cr elwctrode.
It is false statement.
Because at Pt electrode reduction takes place as it is cathode.
So electrons flow towards Pt electrode.
The reaction occurs at platinum electrode is as follows.
Br2(aq) + 2e- ---------> 2Br^- (aq)
Electrons flow from Cr electrode to Pt electrode.