A.在250 mL的容量瓶中定容配成250 mL烧碱溶液 |
B.用移液管移取25 mL烧碱溶液于锥形瓶中并滴几滴甲基橙指示剂 |
C.在天平上准确称取烧碱样品Wg,在烧杯中用蒸馏水溶解 |
D.将物质的量浓度为c的标准硫酸溶液装入酸式滴定管,调节液面,记下开始读数为V1 |
① | | | | | | | | | | | | | | | | | |
| ② | | | | | | | | | | | | ③ | ④ | ⑤ | | |
⑥ | | | | | | | | | | | | ⑦ | | | | ⑧ | |
| | | ⑨ | | | | ⑩ | | | | | | | | | | |
1 | | | | | | | | | | | | | | | | | | |
2 | | | | | | | | | | | | | | D | | B | A | |
3 | J | I | | | | | | | | | | | H | | C | G | F | E |
4 | L | K | | | | | | | | | | | | | | | N | |
5 | | | | | | | M | | | | | | | | | | | |
6 | | | | | | | | | | | | | | | | | | |
A.O | B.N | C.F | D.Cu |
| | | | ① | ② | |
③ | | ④ | ⑤ | | ⑥ | ⑦ |
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