服务热线
搜题▪组卷

| 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 |

已知10℃时KNO3的溶解度为20.9g,30℃时KNO3的溶解度为45.8g。如图,小明同学在盛有100g30℃蒸馏水的甲、乙两个烧杯中分别加入20g和40gKNO3固体,充分溶解。请回答下列问题:| 温度/℃ | 0 | 10 | 20 | 30 | 40 | 50 |
| NaCl | 35.7 | 35.8 | 36.0 | 36.3 | 36.6 | 37 |










| 温度(℃) | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
| KNO3 | 13.3 | 20.9 | 32 | 45.8 | 64 | 85.5 | 110 | 138 | 169 | 202 | 246 |
| NaCl | 35.7 | 35.8 | 36 | 36.3 | 36.6 | 37 | 37.3 | 37.8 | 38.4 | 39 | 39.8 |

| 资料:A的溶解度 | |||||
| 温度/℃ | 20 | 30 | 40 | 50 | 60 |
| 溶解度/g | 37.2 | 41.4 | 45.8 | 50.4 | 55.2 |
| 温度/℃ | 20 | 30 | 40 | 50 | 60 | |
| 溶解度/g | NaCl | 36.0 | 36.3 | 36.6 | 37.0 | 37.3 |
| KNO3 | X | 45.8 | 63.9 | 85.5 | 110 | |


| 温度/℃ | 20 | 30 | 40 | 50 | 60 |
| 溶解度/g | 37.2 | 41.4 | 45.8 | 50.4 | 55.2 |

| 温度/℃ | 10 | 20 | 30 | 40 | 50 | 60 | |
| 溶解度/g | NaCl | 35.8 | 36.0 | 36.3 | 36.6 | 37.0 | 37.3 |
| KNO3 | 20.9 | 31.6 | 45.8 | 63.9 | 85.5 | 110.0 | |

| 温度℃ | 10 | 20 | 30 | 40 | 50 | |
| 溶解度/g | 氯化钠 | 35.8 | 36.0 | 36.3 | 36.6 | 37.0 |
| 硝酸钾 | 20.9 | 31.6 | 45.8 | 63.9 | 85.5 | |


dyhx2019
2019-06-30
初中化学 | | 填空题