3. Consider the reaction once it has reached equilibrium: N2(g) + 3H2(g) 2NH3(g) What will happen in each of the following cases (forward reaction will occur, reverse reaction will occur, or no change)? a. More nitrogen gas is added b. Some hydrogen gas is removed c. Some ammonia (NH3) is added d. The volume is decreased Pyridine (CsHsN) is a base even though it does not contain the hydroxide ion. Writea chemical equation that describes how pyridine can be an Arrhenius base when it is dissolved in water. 4. The pH of your blood is 7.4. What is the molar concentration of hydroxide ions [OH] in your blood? 5.