1. What is the poh of a 0.1 M HClO 4 solution? What kind of acid base problem was this?.
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1 Spring 009 CH0 Worksheet How to Systematically Work Harder and Harder Acid Base Calculations Exactly the Same Way: Proof that the Seven Steps to Solving Acid Base Problems Work Remove the spectator ions Are there any strong acids or bases Are there any weak acids or bases Do I neutralize (are there both acids and bases and is at least on of them strong?) Neutralize: convert everything to moles, write down neutralization reaction, perform limiting reagent calculation, convert back to molarity if necessary) Select the appropriate acid base calculation and solve Convert to appropriate final form (ph, poh, H+, OH-) using = ph + poh and = pk a + pk b Important: These calculations are based upon the following important assumptions: Strong acids and bases completely dissociate Weak acids and bases do not dissociate significantly (typically they will have K values <0 - ) The dissociation of water does not contribute significantly to ph (concentrations of dissolved solutions are large, > 0 -, and the K values are not near K w, >0 - ) In a nutshell, all of these problems are worked at high concentrations for a single equilibrium. When we get to complex equilibria you will learn how to tackle problems for which the assumptions do not hold.. What is the poh of a 0. M HClO solution?. What is the ph of a 0. M RbOH solution?. What is the [H + ] of a 0. M malonic acid with a K a of 0-9 solution?
2 . What is the ph of a 0. M lithium malonate solution? (Need a K b? Look at the problem above.). What is the [OH - ] of a 0.0 M methylamine solution of K b = 0 -?. What is the poh of a 0.0 M CH NH Br solution? (Need a K a? Look at the problem above.). What is the ph when equal volume mixtures of 0. M HClO and 0.M LiClO are mixed?
3 8. What is the ph when 00 ml of 0. M HClO and 0 ml of 0. M Ba(OH) are mixed? 9. What is the ph when liter of 0. M HClO and liter of 0.M Ba(OH) are mixed? (this is the first problem to need a calculator) 0. What is the poh when 00 ml of 0. M malonic acid and 00 ml of 0. M sodium malonate are mixed? 0. What is the ph when 00 ml of 0. M methylamine and 00 ml of 0. M CH NH Br are mixed?
4 The next four calculations represent the titration of a weak base with a strong acid. Note the ph gets smaller and smaller as more acid is added.. What is the ph when no HBr is added to 00 ml of 0. M sodium malonate?. What is the ph when 0 ml of 0. M HBr is added to 00 ml of 0. M sodium malonate?. What is the ph when 00 ml of 0. M HBr is added to 00 ml of 0. M sodium malonate?. What is the ph when 0 ml of 0. M HBr is added to 00 ml of 0. M sodium malonate?
5 The next four calculations represent the titration of a weak acid with a strong base Note the ph gets larger and larger as more base is added.. What is the ph when no LiOH is added to 00 ml of 0.0 M CH NH Br?. What is the ph when 00 ml of 0.0 M LiOH is added to 00 ml of 0.0 M CH NH Br?. What is the ph when 00 ml of 0.0 M LiOH is added to 00 ml of 0.0 M CH NH Br? 8. What is the ph when 0 ml of 0.0 M LiOH is added to 00 ml of 0.0 M CH NH Br?
6 9. What is the ph when 0 ml of 0. M HClO is added to 00 ml of 0. M methylamine and 00 ml of 0. M CH NH Br? 0. What is the poh when 0 ml of 0.00 M KOH is added to 00 ml of 0.0 M malonic acid and 00 ml of 0.0 M sodium malonate are mixed? Super-duper do it in your head ph problem. What is the ph when 0 ml of 0. M HClO and 0 ml of 0.0M Ba(OH) are added to 0 ml of 0. M methylamine and ml of 0. M CH NH Br? Hint, put away your calculator and do it in your head.
Problem Solving. ] Substitute this value into the equation for poh.
![Problem Solving. ] Substitute this value into the equation for poh.](/thumbs/71/65824959.jpg "Problem Solving. ] Substitute this value into the equation for poh.")
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