The following equilibrium constants are given: N2 + 3H2 <=> 2NH3 ; K 1 N2 + O2 <=> 2NO ; K 2 H2 + 1/2 O2 <=> H2O ; K 2 The equilibrium constant for the oxidation of NH3 by oxygen to give NO is

1. A. K 2 ,K 3 2 K 1
2. B. K 1 ,K 2 K 3
3. C. K 2 2 ,K 3 K 1
4. D. K 2 ,K 3 3 K 1

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