Calculate the ph of a cu-h2 cell (e° = 0.34 v) if the emf is 0.45 volts and the [cu2 is 0.50 m hint: first write the oxidation and reduction half-reactions and determine which direction is spontaneous. determine if 2- cu and h are on the product or the reactant side before you start calculating.

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next