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本文将2014年高考中有关硫代硫酸钠制备的试题总结如下。例1(海南卷第17题)硫代硫酸钠(Na2S2O3)可用做分析试剂及鞣革的还原剂,它受热、遇酸易分解。工业上可用反应:2Na2S+Na2CO3+4SO_2=3Na2S2O3+CO2制得,实验室模拟工业过程的装置如图1所示,回答下列问题:
This article summarizes the questions on the preparation of sodium thiosulfate in 2014 college entrance examination as follows. Example 1 (Hainan Volume 17) Sodium thiosulfate (Na2S2O3) can be used as analytical reagents and tanning agents, it is heated, easily decomposed in acid. Industrial availability of the reaction: 2Na2S + Na2CO3 +4 SO2 = 3Na2S2O3 + CO2 in the laboratory simulation of industrial processes as shown in Figure 1, the following questions: