12 14 2016 RWW11 Acid Base Reactions and the p Scale Paddy Sheehan CH 201 section 002 Fall 2016 Instructor Robert Warren WebAssign RWW11 Acid Base Reactions and the p Scale Homework Current Score 100 Due Monday October 17 2016 11 59 PM EDT The due date for this assignment is past Your work can be viewed below but no changes can be made 1 40 points Write net Bronsted equations and determine the equilibrium constants for the acid base reactions that occur when aqueous solutions of the following are mixed Instructions Enter all substances in the order listed at the top of the column Use a carot to indicate a superscript but do nothing for subscripts Use a hyphen greater than for yields Click on the eye symbol to check your formatting Report K to three sig figs even though it is good to only two Group 1A and 7A ions except fluoride are spectator ions Reactants hydrocyanic acid sodium nitrite perchloric acid sodium cyanide hydrazoic acid sodium hypochlorite KHCO3 KCN H2CO3 KHS Rxn Acid 1 Base 2 Base 1 Acid 2 No Response HCN NO2 1 CN 1 HNO2 No Response H3O 1 CN 1 H2O HCN No Response HN3 ClO 1 N3 1 HClO No Response HCO3 1 CN 1 CO3 2 HCN No Response H2CO3 HS 1 HCO3 1 H2S http www webassign net web Student Assignment Responses last dep 14314092 K three sig figs No Response 1 00e 06 No Response 2 50e9 No Response 543 No Response 0 118 No Response 4 3 1 3 12 14 2016 RWW11 Acid Base Reactions and the p Scale 2 10 points What are the hydronium and hydroxide ion concentrations in a solution with a pH of 10 50 H3O1 No Response 3 15e 11 M OH1 No Response 3 18e 04 M 3 10 points What is the pKa of an acid if its Ka is 2 40E 06 pKa No Response 5 62 4 10 points What is the pKb of a base whose conjugate acid has a pKa of 5 17 pKb No Response 8 83 5 10 points What is the pH of a solution whose pOH 2 74 pH No Response 11 26 6 10 points Determine the pH and pOH of a solution in which H3O1 1 82E 03 M pH No Response 2 74 pOH No Response 11 26 http www webassign net web Student Assignment Responses last dep 14314092 2 3 12 14 2016 RWW11 Acid Base Reactions and the p Scale 7 10 points The pH of pure water at some temperature is 5 64 What is the value of Kw at this temperature Hint Kw H3O1 OH1 but its value is 1 0E 14 only at 25 oC You cannot use that value in this problem Kw No Response 5 25e 12 http www webassign net web Student Assignment Responses last dep 14314092 3 3
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