I don't know how to do some of the questions relating to the spontaneous reactions.
i)Is H2 capable of reducing Ag+? (I say YES, is it right?)
ii)Is Fe(2+) capable of reducing VO(2+)? (How can Fe(2+) be a reducing agent?)
iii)Is Fe(2+) capable of reducing Cr(2+) to Cr? (How can Fe(2+) be a reducing agent?)
iv)Is Fe(2+) capable of reducing Cr(3+) to Cr(2+)? (How can Fe(2+) be a reducing agent?)
v)Is it possible for a reagent to redce I2 to I- but not to reduce Cu(2+) to Cu? What RANGE of standard reduction potentials could such a reagent have?
-I say YES, but what is the range?
vi)Crystals I2 are added to a solution of NaCl Is this a spontaneous or non-spontaneous reaction?(I don't know if ions/atoms in NaCl are reducing or oxidizing agents. And there's two things in NaCl, how can I know if this is a spontaneous rxn or not?)
Can someone teach me please? THANKS