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

| 选项 | A | B | C |
| 试管内溶液中的溶质 | KNO3 | Ca(OH)2 | KNO3 |
| 物质X | NaCl | 浓硫酸 | NH4NO3 |
| 温度/℃ | 20 | 30 | 40 | 50 | |
| 溶解度/g | KCl | 34.0 | 37.0 | 40.0 | 42.6 |
| KNO3 | 31.6 | 45.8 | 63.9 | 85.5 | |


| 温度(℃) | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 |
| 溶解度(g/100g水) | 29.4 | 33.3 | 37.2 | 41.4 | 45.8 | 50.4 | 55.0 | 60.2 |

| 温度/℃ | 20 | 32.4 | 40 | 60 | 80 | 100 | |
| 溶解度/g | NaCl | 36.0 | 36.4 | 36.6 | 37.3 | 38.4 | 39.8 |
| Na2SO4 | 19.4 | 52.0 | 48.4 | 45.3 | 43.7 | 42.3 | |

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| 温度/℃ | 10 | 20 | 40 | 60 |
| 溶解度/g | 21 | 32 | 64 | 110 |









列表法和作图法是常用的数据处理方法。请根据下列图表进行分析。| 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 |
| KCl | 27.6 | 31.0 | 34.0 | 37.0 | 40.0 | 42.6 | 45.5 | |
| 温度/℃ | 0 | 20 | 40 | 60 | |
| 溶解度/g | NaCl | 35.7 | 36.0 | 36.6 | 37.3 |
| KNO3 | 13.3 | 31.6 | 63.9 | 110 | |

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2023-04-09
初中化学 | | 填空题