Vanadic ion, V3+, forms green salts and is a good reducingagent, being itself changed in neutral solutions to thenearly colorless ion V(OH)4+. Suppose that 15.0 mL of a0.200-M solution of vanadic sulfate, V2(SO4)3, was neededto reduce completely a 0.540-g sample of an unknownsubstance X. If each molecule of X accepted just oneelectron, what is the molecular weight of X? Suppose thateach molecule of X accepted three electrons; what wouldbe the molecular weight of X then?

Chemistry
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Chapter1: Chemical Foundations
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Vanadic ion, V3+, forms green salts and is a good reducing
agent, being itself changed in neutral solutions to the
nearly colorless ion V(OH)4+. Suppose that 15.0 mL of a
0.200-M solution of vanadic sulfate, V2(SO4)3, was needed
to reduce completely a 0.540-g sample of an unknown
substance X. If each molecule of X accepted just one
electron, what is the molecular weight of X? Suppose that
each molecule of X accepted three electrons; what would
be the molecular weight of X then?

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