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a Secure https://session masteringchemist try.com/myct/itemView?assignmentProble

ID: 560163 • Letter: A

Question

a Secure https://session masteringchemist try.com/myct/itemView?assignmentProblemiD-93331416 in Solutions AaaottetFolbou. Calculating loo-1 and previous m2 Part B A solution has H0']-32*10s M. Use the ion product constant of water K. = [H30' ][OH ] to find the OH of the solution. Express your answer to two significant figures Submit My Anwers Give Up Part C A solution has jOH -2310"2 MM. Use the lon product constant of water to find the Hs0'] of the solution. Express your answer to two significant figures Hints Submit My Answers Give Up Con

Explanation / Answer

Part B:

Kw = [ H3O+ ] [OH- ]

AS we know the ionic product of water is 1 x 10-14

1 x 10-14 = 3.2 x 10-5 [OH- ]

1 x 10-14 / 3.2 x 10-5 = [OH- ]

0.3125 x 10-9 = [OH- ]

3.125 x 10-10 = [OH- ]

Therefore the concentration of  [ OH- ] is 3.125 x 10-10 M

Part C :

Kw = [ H3O+ ] [OH- ]

AS we know the ionic product of water is 1 x 10-14

1 x 10-14 =  [ H3O+ ] 2.3 x 10-2

1 x 10-14 / 2.3 x 10-2 =   [ H3O+ ]

0.434782 x 10-12=  [ H3O+ ]

4.34782 x 10-13 =  [ H3O+ ]

Therefore the concentration of  [ H3O+ ] is 4.35 x 10-13 M

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