鉴别以下几种物质NaCl.K2SO4.NaCO3.KCl.NaHCO3 分步骤一一鉴别出来 `````````````````````````利用（①）反映 ```````````````````````````````↓ ``````````````现象（②） ``````````````现象（③） `````````````1______溶液`````````````` 2______溶液 ````````````````↓ ````````````````````````↓ ```````````加(④)溶液 `````````````````加（⑤）溶液 ````````↓ ``````````↓ ``````````↓ ``````````````````↓````有沉淀 ````````无现象````` 有沉淀 ```````````````无现象 ````原溶液 ````````原溶液````` 原溶液``````````````` 原溶液 ````为(⑥)``````` `为KCl

鉴别以下几种物质
NaCl.K2SO4.NaCO3.KCl.NaHCO3 分步骤一一鉴别出来
`````````````````````````利用（①）反映
```````````````````````````````↓
``````````````现象（②） ``````````````现象（③）
`````````````1______溶液`````````````` 2______溶液
````````````````↓ ````````````````````````↓
```````````加(④)溶液 `````````````````加（⑤）溶液
````````↓ ``````````↓ ``````````↓ ``````````````````↓
````有沉淀 ````````无现象````` 有沉淀 ```````````````无现象
````原溶液 ````````原溶液````` 原溶液``````````````` 原溶液
````为(⑥)``````` `为KCl ``````为（⑦） ``````````````↓
````````````````````````````````````````````````````加（⑧）
```````````````````````````````````````````````↓ ```````````↓
````````````````````````````````````````````有气体```````` 无现象
````````````````````````````````````````````原溶液```````` 原溶液
````````````````````````````````````````````为（⑨）`````` 为NaCl
填出 1.2是什么溶液 和①至⑨的空
最好能告诉我反映方程和原理