H2(g)+V2O5(s)→V2O3(s)+H2O(l)
Let the coefficients for the given reaction be as follows:
aH2(g)+bV2O5(s)→cV2O3(s)+dH2O(l)
What will be the equations for the number of atoms of each element, so that each is balanced?
a = d, b = c, 5b = 3c + d
aH2(g)+bV2O5(s)→cV2O3(s)+dH2O(l)
For hydrogen number of atoms on reactant and product side will be: 2a = 2d which can be written as a = d
Similarly for vanadium: 2b = 2c which can be written as b = c
For oxygen: 5b = 3c + d