pH of KCN=11.35,FIND kh

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pH of KCN=11.35,FIND kh
Answered Same DayDec 20, 2021

Solution

Robert answered on Dec 20 2021
3 Votes
TTs080612_tay32145_1
pH of KCN=11.35,FIND kh
Solution
By equations,
14 1/ 2 1/ 2log 1/ 2pH PKw c pKa   
But, Kh=Kw/Ka
pH= 11.35
Kw= 1x10-14 (from data from literature)
Ka=6.2X10-10 (from data)
KH=1x10-14/6.2X10-10=1.61x10-5
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