Electrochemistr...

On electrolysis, water splits into

Electrolysis of a dilute solution of aqueous sodium chloride results in the cathode product:

......................................acts as the anode.

For $$Cu(s) + NO_3^- (aq) + H^+(aq) \rightarrow Cu^{2+}(aq) + NO_2(g) + H_2O(l)$$, which of the following takes place?

______________ acts as the cathode.

Whats the potential of the reaction below given the half-reaction potentials:
$$2Fe_2+ + Cl_2 \rightarrow 2Fe^{3+} + 2Cl^-$$
$$Fe^{3+} + e^- \rightarrow Fe^{2+}; E = 0.77 V$$
$$Cl_2 + 2e^- \rightarrow 2Cl^- ; E = 1.36 V$$

In a double bond connecting two atoms there is sharing of:

For the following reactions:
$$Zn \rightarrow Zn^{2+} + 2e^-; E=+0.76 V$$
$$Au \rightarrow Au^{3+} + 3e^-; E=-1.42 V$$
If gold foil is placed in a solution containing $$Zn^{2+}$$, the reaction potential would be:

Which of these statements best describes a galvanic cell?