In the simple collision theory of chemical kinetics, the reaction rate increases as the concentration of reactant molecules increases because .A. the average kinetic energy of the molecules increases B. the rate constant increases C. the activation energy increases D. the frequency of molecular collisions increases E. the order of the reaction increases

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

What must be in balance for temperatures to remain constant?