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温度/℃ | 0 | 10 | 20 | 30 | 40 |
氯化钠溶解度/g | 35 | 35.5 | 36 | 36.5 | 37 |
碳酸钠溶解度/g | 6 | 10 | 18 | 36.5 | 50 |
温度/℃ | 0 | 10 | 20 | 30 | 40 | 50 | 60 | |
溶解度/g | KNO3 | 13.3 | 20.9 | 31.6 | 45.8 | 63.9 | 85.5 | 110 |
NaCl | 35.7 | 35.8 | 36 | 36.3 | 36.6 | 37.0 | 37.3 |
选项 | A | B | C | D |
试管内溶液中的溶质 | 甲 | 乙 | 甲 | 乙 |
物质M | NaOH | NaOH | NaCl | NH4NO3 |
温度/℃ | 0 | 20 | 40 | 60 | 80 | |
溶解度/g | NaCl | 35.7 | 36.0 | 36.6 | 37.3 | 38.4 |
KCl | 27.6 | 34.0 | 40.0 | 45.5 | 51.1 |
温度/℃ | 0 | 20 | 40 | 50 | 60 | 80 | |
溶解度/g | NaCl | 35.7 | 36.0 | 36.6 | 37.0 | 37.3 | 38.4 |
KNO3 | 13.3 | 31.6 | 63.9 | 85.5 | 110 | 169 |
烧杯序号 | 温度/℃ | 水的质量/g | 氯化铵质量/g | 溶液质量/g |
① | 20 | 100 | 20 | a |
② | 20 | 100 | 40 | 137.2 |
③ | 40 | 100 | 40 | 140 |
④ | 60 | 100 | 50 | 150 |
dyhx2020
2020-07-19
初中化学 | | 填空题