题目

—You ran into Mr. Li ! How did that happen? —Well,           of us was looking where we were going. We came around the corner at the same time. A．neither            B．either           C．both           D．none 答案：A工业上用电解NaCl溶液的方法来制取NaOH、Cl2和H2，反应的化学方程式为：2NaCl+2H2O2NaOH+H2↑+Cl2↑．现取一定质量分数的NaCl溶液214.6g进行电解，当NaCl完全反应时，生成0.4gH2．（1）当NaCl完全反应时，生成Cl2的质量为______g，参加反应的NaCl的质量为______g．（2）当NaCl完全反应时，所得NaOH溶液中溶质的质量分数为多少？（假设生成的Cl2和H2全部逸出）