For the reaction,
`2NO(g) + 2H_(2)(g) rarr N_(2)(g) + 2H_(2)O(g)`
The rate expression can be written in the following ways:
`(d[N_(2)])/(d t) = k_(1)[NO][H_(2)], (d[H_(2)O])/(d t) = k_(2)[NO][H_(2)]`
`- (d[NO])/(d t) = k_(3)[NO][H_(2)], -(d[H_(2)])/(d t) = k_(4)[NO] [H_(2)]`
The relationship between `k_(1), k_(2), k_(3), k_(4)` is