![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dcde4bdbd4d0e52382a6cbf799869f.svg)
是一种工业用化学品,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cea43784965c9d7a9137e487536e605.svg)
以上开始逐渐分解生成碳酸钠、二氧化碳和水,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9810e6c97eccc5db153f94792b52ea.svg)
时完全分解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dcde4bdbd4d0e52382a6cbf799869f.svg)
在水中的溶解度小于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/889220d0a5054f0df8fdb14fec5409b8.svg)
。回答下列问题:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dcde4bdbd4d0e52382a6cbf799869f.svg)
属于
_______(填“正盐”、“酸式盐”或“碱式盐”),实验室将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.svg)
、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1163bc05a73653778b05c45aed88addc.svg)
通入饱和食盐水中来制备
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dcde4bdbd4d0e52382a6cbf799869f.svg)
,先通入的是
_______(填“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.svg)
”或“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1163bc05a73653778b05c45aed88addc.svg)
”),反应的化学方程式为
_______;该反应一般在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d873c7d960365e0fb7416b70be28c2.svg)
的水浴中进行,原因是
_______。
(2)制取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dcde4bdbd4d0e52382a6cbf799869f.svg)
所需要的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1163bc05a73653778b05c45aed88addc.svg)
采用图1装置进行制备。当锥形瓶中固体为生石灰时,分液漏斗中应盛放
_______(填试剂名称),为防止尾气污染,多余的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1163bc05a73653778b05c45aed88addc.svg)
用
_______(填试剂名称)吸收。
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/98ea1131-3008-4319-adb2-8b3d68979d3b.png?resizew=556)
(3)从
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dcde4bdbd4d0e52382a6cbf799869f.svg)
溶液中得到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dcde4bdbd4d0e52382a6cbf799869f.svg)
晶体的操作是
_______、
_______、洗涤、干燥。
(4)将得到的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dcde4bdbd4d0e52382a6cbf799869f.svg)
晶体溶于水,加入过量稀
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14353a38204376d0c45212ff20e540dd.svg)
酸化,再加入
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d3f4b28e32ef69b9918b93092236bc2.svg)
溶液,出现白色沉淀,说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dcde4bdbd4d0e52382a6cbf799869f.svg)
晶体中含少量的
_______(填化学式)。采用如图2方法进行
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dcde4bdbd4d0e52382a6cbf799869f.svg)
晶体纯度的测定(设只含一种杂质)。该试样为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132ba10960caffa92a1d8df6c374eda5.svg)
,最后冷却称量得到的固体质量为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac5d5f69ae949b9e36b93d452b45ef1.svg)
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dcde4bdbd4d0e52382a6cbf799869f.svg)
的质量分数为
_______%。(精确到0.01)