#1. NO (g) + 1/2 O2 (g) --> NO2 (g) what happens if the size of the vessel decreased? of course, the equilibrium would shift to the right. but how about K(eq)??? If the equilibrium shifts to the right, it means NO and O2 decrease, and NO2 increases. right? then, K(eq) is increases becuase K(eq) is product over reactant. Product increase and reactant decrease result in K(eq) increase. Am I worng? but why K(eq) doesn't change??? #2. 150ml of a 3M KCl solution is diluted with 500ml of distilled water. the resulting solution is stirred and 300ml are poured out of the beaker. what is the molarity of the remaining solution? (150*3)/650 is right? it's nothing with the information of 300ml pouring out of the beaker. right? #3. Al(OH)3, HCl, NaOH all are water soluble. right?