已知RC≡CH+NaNH──>RC≡CNa+NH，炔钠加水又能恢复成炔烃，RC≡CNa+HO──>RC≡CH+NaOH，据此可推测酸性大小为AHN>HO>RC≡CHBHO>RC≡CH>NHCHO>NH>RC≡CHDNH>RC≡CH>HO