ocr: CH111 QUIZ3 1984 PAGE3 Bonus Protlen - 10 poires: nc partial credis Can you determine shat is wrong with the following calculation? A à student is asked to calculate the hydrogen ion concentration in 0.1 M H25 solu:ior. He believes that the acid ionizes stepwise 3S follows: 1) H25 - - RHHS K09x108 2)HR. K2 = 1.2 X 19-15 Acding the inC ecuitiers jie:is 3) MSPR.S K3K,K2 - = 1.1 x - 10-22 4).1-x 2x X with the concentrations at equiiibrium as shown. Then, setting up the equilibrium expression 4 I 12x)2X 5) 1 1.1 X - 10-22- 0.1-X 6) - X2.8 x 10-8- (S7 7) 2x : 5.6 X 10-8IH] Where did the studnet go ...
