Course Home X) E MasteringChemistry: UN × Chegg Study | Guided S: × \\ e Find Th

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Course Home X) E MasteringChemistry: UN × Chegg Study | Guided S: × e Find The PH Of A 0.01 1 x Desmos l Scientific Calc C Secure | https://session.masteringchemistry.com/myct/itemView?assignmentProblemID:89274771 Apps P Sign In | MasteringCh C Home | Cheggcom Late Nite Labs e previous | 18 of 28 I ned Exercise 15.52 Part E 20x10- M KOH Express your answer using two significant fgures. Enter your answers numerically separated by a comma. For each srong basa solution determina [H30'·OH l pH, and poH My Anewers gau Part F 20x10- M KOH Express your answer to two decimal places Enter your answers numerically separated by a comema PH, pOH- My Anewers gau Part G 0 MCa(OH) Express your answer using two significant figures. Enter your answers numericaly separated by a comma. Submit Part H 52k10 M Ca(OH) Expreas your answer to two decimal places. Entar your answars numerically saparated by a comma 11:01 PM

Explanation / Answer

Part E : 2.0x10-4 M KOH

KOH ---> K+ + OH-

1 mole of KOH produces 1 mole of OH-

[OH-]=[KOH] = 2.0x10-4 M

WE know that [H3O+][OH-] = 1.0x10-14

[H3O+] = 1.0x10-14 / [OH-]

= 5.0x10-11 M

Part F:

pH = - log[H3O+] = - log( 5.0x10-11) = 10.3

pOH = 14 - pH

= 14 - 10.3

= 3.7

Part A :

8.64x10-3 M LiOH

[OH-] = [LiOH] = 8.64x10-3 M

[H3O+][OH-] = 1.0x10-14

[H3O+] = 1.0x10-14 / [OH-]

= 1.16 x10-12 M

Part B :

pOH = - log [OH-] = - log (8.64x10-3 M) = 2.06

pH = 14 - pOH = 14 - 2.06 = 11.94

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