1 高二教材中甲烷的制取实验 用结晶醋酸钠或无水醋酸钠与碱石灰、氢氧化钠的混和物,加少量二氧化锰作催化剂加热,上述药品的混和物均能生成甲烷。 只用醋酸钠、氢氧化钠固体与二氧化锰混和加热,而不用碱石灰同样可以生成甲烷。 改进后实验的优点是省事又省时,也节省药品,而又能得到予期的效果。 1 Preparation of methane in high school textbooks The use of crystalline sodium acetate or anhydrous sodium acetate and soda lime, sodium hydroxide mixture, plus a small amount of manganese dioxide as a catalyst heating, the mixture of these drugs can generate methane. Only sodium acetate, sodium hydroxide solids and manganese dioxide are mixed and heated instead of soda lime to produce methane. The advantage of the improved experiment is that it saves time and time, but also saves drugs, but it can also achieve the desired effect.