Non electrolytes do not dissociate at all in solution and thus they do not produce ions and hence non electrolytes solutions do not conduct electricity. They are typically polar covalent substances that dissolve in water as molecules instead of ions. An example of a non electrolyte is sugar which dissolves in water but does not form ions.
Formation of hydrates is considered to be a chemical change.
Answer:

Explanation:
N2(g)+O2(g)⇌2NO(g), 
N2(g)+2H2(g)⇌N2H4(g), 
2H2O(g)⇌2H2(g)+O2(g), 
If we add above reaction we will get:
2N2(g)+2H2O(g)⇌2NO(g)+N2H4(g) Eq (1)
Equilibrium constant for Eq (1) is 
Divide Eq (1) by 2, it will become:
N2(g)+H2O(g)⇌NO(g)+1/2N2H4(g) Eq (2)
Equilibrium constant for Eq (2) is 
