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13 Dec 2019
Piperazine, HN(C4H8)NH, is a diprotic weak base used as acorrosion inhibitor and an insecticide and has the followingproperties:
pKb1=4.22pKb2=8.67
For writing the reactions of this base in water, it can behelpful to abbreviate the formula as Pip:
Pip+H2OPipH++H2O??PipH++OH?PipH22++OH?
The piperazine used commercially is a hexahydrate with theformula C4H10N2?6H2O
What is the pH at the second equivalence point?
Piperazine, HN(C4H8)NH, is a diprotic weak base used as acorrosion inhibitor and an insecticide and has the followingproperties:
pKb1=4.22pKb2=8.67
For writing the reactions of this base in water, it can behelpful to abbreviate the formula as Pip:
Pip+H2OPipH++H2O??PipH++OH?PipH22++OH?
The piperazine used commercially is a hexahydrate with theformula C4H10N2?6H2O
What is the pH at the second equivalence point?