【简答题】Na 2 SO 3 固体在空气中久置容易变质。 Ⅰ请写出Na 2 SO 3 固体在空气中变质的化学方程式______________ Ⅱ实验室中欲检验Na 2 SO 3 固体样品是否已经变质,最简单的方法为______________ 选用以下装置和药品通过测定生成SO 2 的质量,可计算Na 2 SO 3 固体样品的纯度。反应原理: H 2 SO 4 (浓)+ Na 2 SO 3 = Na 2 ...
【简答题】Negotiation Your company will do business with another foreign company. Since it is the first timeto do business with that company, you have been asked to submit you suggestions on how to negotiate wi...