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In which reaction is a quaternary ammonium salt formed?
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Reaction of EtNH2 with nBuBr.
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Reaction of EtNH2 with EtCl.
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Reaction of EtNH2 with MeCOCl.
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Reaction of EtNH2 with excess MeI.
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Which statement is incorrect about acid-base chemistry of diisopropylamine (iPr2NH)?
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The value of pKb for iPr2NH refers to:
iPr2NH + H2O  iPr2NH2+ + HO–
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iPr2NH can only act as a Brønsted base, not as a Brønsted acid.
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The value of pKa for the conjugate acid of iPr2NH refers to:
iPr2NH2+ + H2O H3O+ + iPr2NH
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The value of pKa for iPr2NH refers to:
iPr2NH + H2O H3O+ + iPr2N–
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