Question

Part B . Calculate the pH of a 0.10 M solution of hypochlorous acid, HOCI. K. of HOCI is 3.5 x 10-8 at 25°C. Express your answer numerically using two decimal places. View Available Hint(s) IVO | ΑΣφ pH Submit Part Calculate the pH of a 0.10 M solution of HCI. Express your answer numerically using two decimal places. View Available Hint(s) . AE pH OF Submit BERARE Provide Feedback

Answer 1

torn HOCI = H + ocio Ka = 3.5x108 á H 0.10M -y 0:10- I Keg of the reaction is very very small, reaction will not go much in for wand direction. y is very very small , Can be neglected n Key = [H +3 [oc1-). [Hoc] 3.5x10-8 → (Y) (Y) = 3-5x10-8 0.10 » yo9 = 3.5x10-9 yo = 35x10-10 y = 5.916X10 -5 = [H +3 B crery Small wort.oolo) pH = -log [H +) pH = -log (5.916x10-5) = 5- 10g (5.916) = 4:09898 PH = 14.297

5 HC Troj a H + Cie rag) Cotrong Aca) H 0.10M -0.10M 0 +0:10 +0:10M F 0 +0.10M +0.JOM pH = = -log Co.,] -log C10-1)