写出以下反应方程式:溴乙烷与NaOH的水溶液共热CH3CH2Br+NaOH△CH3CH2OH+NaBrCH3CH2Br+NaOH△CH3CH2OH+NaBr;乙醛与新制银氨溶液Ag(NH3)OH的反应CH3CHO+2Ag(NH3)2OH△CH3COONH4+2Ag↓+3NH3+H2OCH3CHO+2Ag(NH3)2OH△CH3COONH4+2Ag↓+3NH3+H2O苯酚与溴水的反应.