Which of the following is not a primary amine?

	Which statement is incorrect about ethylamine (EtNH2)?      Hydrogen bond formation occurs between H2O and EtNH2 molecules.    EtNH2 is immiscible with water.    EtNH2 is a weak Brønsted base.    Hydrogen bond formation occurs between EtNH2 molecules in neat EtNH2.

	You are asked to distinguish between samples of ethylamine and triethylamine on the basis of their IR spectra. Which region of the spectra would be most diagnostic?      ≈ 1400-1200 cm^–1    ≈ 2200-2000 cm^–1    ≈ 3400-3200 cm^–1    ≈ 1800-1600 cm^–1