32. If the standard potentials for the couples Cu2+ /Cu, Ag+ /Ag, and Fe2+ /Fe are +0.34, +0.80, and -0.44 V, respectively, which is the strongest reducing agent? (A) Fe, (B) Ag, (C) Ag + , (D) Cu, (E) Fe2 +

1. A beam of light with an intensity of 15 W is. incident on a copper plate (work function is7.43xl0-19 J). Electrons with a minimum wavelength of 3.75x10 －10 m are ejected from the surface of the copper. Calculate the frequency of the incident light. [Hint: Plank constant = 6.626 x 10－34J·s] (A)3.7lx1015Hz (B) 3.71 x 1016 Hz,(C) 3.71 x 1017 Hz,(D) 3.71 x 1018Hz(E) none of above

32. If the standard potentials for the couples Cu2+ /Cu, Ag+ /Ag, and Fe2+ /Fe are +0.34, +0.80, and -0.44 V, respectively, which is the strongest reducing agent?
(A) Fe,
(B) Ag,
(C) Ag + ,
(D) Cu,
(E) Fe2 +

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