M Prep | MCAT 2015 Question of the Day - Prep, Practice Questions, and More!

Q:	When an electrode of Au^(s) is placed into a solution of PbSO₄, no precipitate of Pb forms on the surface of the electrode. Which of the following can be concluded from this information?

The reaction Au + Pb²⁺ → Au⁺ + Pb is spontaneous

The E� of the reaction setup is negative

An increase in the PbSO₄ would cause Pb²⁺ to plate onto the electrode

Reversal of the setup with a solid Pb electrode and aqueous Au would not have Au precipitate onto Pb