Question

6. Given the equilibrium pink blue When a solution of complex ion of Co* is heated, the solution becomes blue. (1 pt. each) a. Is AH for the forward reaction positive or negative? b. When the temperature is increased does the value for Kes Increase or decrease? 7. Acidified chromate solution is represented by the following equilibrium reaction (aq)+2 H(aq) Yellow 2 Cro CriO,2 (aq)+ HO (U) Orange Will this solution become yellow or orange is you add: (1 pt. each) a. NaOH (aq) b. HNO3 (aq) , and iodide ions, I, in aqueous 8. The kinetics of the reaction between persulfate ions, S,0, solution is studied to determine the rate law for the reaction: When the concentration of [S,0s ] is doubled the rate is also doubled. What is the order of the reaction in (S20s (1 pt.) During the electrolysis of a nickel coin a graphite rod is the cathode. Bubbles and a red solid appear at the rod. Write one half-reaction to describe what is occurring at the cathode. (3 pts.) 9.

7 8 and 9

Answer 1

/2 Yellous oranae roae and eoi

3 the 9uaa 2 8 bubb ve. meae and ce