A standard galvanic cell is constructed in which a Sn 2+ | Sn half cell acts as the cathode . Which of the following statements are correct? Hint: Refer to a table of standard reduction potentials. (Choose all that apply.) In the external circuit, electrons flow from the other compartment to the Sn 2+ |Sn compartment. Cr 3+ |Cr 2+ could be the other standard half cell. The cathode reaction is Sn -> Sn 2+ + 2e - The cathode reaction is Sn 2+ + 2e - -> Sn Hg 2+ |Hg could be the other standard half cell. Solution A standard galvanic cell electrons are flow from anode to cathode. at cathode reduction reaction is takes place The cathode reaction is Sn 2+ + 2e - -> Sn >>>>>>answer .