Hey guys i need some help. Most of these questions i already know the answer to but i just want to make sure i'm right. My final grade is riding on this :grumpy: 1) If given a chemical equilibrium reaction with the delta H, by comparing the rate of the final reaction, is it possible to find the rate of reverse reaction? I don't think its possible. 2) If a reaction has a negative delta H, that means it's an endothermic reaction. Since increasing the temperature of an equation favors endothermic reaction, does that mean will shift towards the reactant? 3) How do you find the pH of a solution with given molarity of OH? Do you first solve for the pOH, then subtract it from 14 and obtain pH? 4) What is the difference between pH and pOH? Other than 1 is used for acid and other base. If a neutral solution has a pH of 7, what's it's pOH, 7? 5) In the symbol for ammonia, NH, why is the Nitrogen written first? 6) In the reaction, 2HOH + 2Na --> H_2 + 2Na+ + OH-, is the Na being reduced or oxidized? 7) What is the subatomic article with mass 1/1837 amu and -1 charge? What is this i totally don't get it. Any help would be appreaciated. I'll check back later while i go study mroe.