A most arduous part of their experiment came as they were leaving Austrilia. They had a lot of luggage to carry and, meanwhile, two children to take care of.
【简答题】(1)物质X是中学化学中的常见物质,X既能与稀硫酸反应,又能与氢氧化钠溶液反应。 ① 若X为氧化物,X的化学式是____________。 ② 若X为单质,X用于焊接钢轨反应的化学方程式是_________________________。 ③ 若X与稀硫酸反应生成无色无味的气体A,与浓氢氧化钠溶液加热反应生成气体B。等物质的量的A和B在水溶液中反应又生成X。 X与稀硫酸反应的离子方程式是 ; X...