Ammonia and oxygen react to form nitrogen monoxide and water, like this:
4nh3
(g)
+
5o2
(g)
→
4no
(g)
+
6h2o
(g)
write the pressure equilibrium constant expression for this reaction.

4NH3+5O2 <=>4NO + 6H2O

Using the definition of Kp, we have
Kp=(Pno^4*Ph2o^6)/(Pnh3^4*Po2^5)
where Pno=partial pressure of NO, etc.

The numerical value for a given temperature can be evaluated when the actual partial pressures are known.

Ch4 is nonpolar and insoluble in water. since all of the hydrogen atoms are evenly spread around the carbon atom even through the c h bond is polar all the poles cancel each other out.