When balancing the following skeletal equation under acidic conditions, what are the coefficients of the species shown?
Ag + CO₂ → AgCO
Water appears in the balanced equation as a ____ with a coefficient of ____.
a) Reactant, 5
b) Product, 5
c) Reactant, 0
d) Product, 0
Which species is the reducing agent?
a) Ag
b) CO
c) CO₂
d) Water