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时间:2018-08-08
《2017 届安徽省亳州市高三上学期期末教学质量检测化学试题及答案》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、2013~2014学年度第一学期期末教学质量调研监测高三化学试题参考答案及评分标准22、(10分)(1)减少有毒气体的排放,防止大气污染(2分)(2)5.2~7.6(2分)(3)蒸发浓缩、冷却结晶(2分,各1分)[来源:www.shulihua.net](4)降低烘干温度,防止产品分解(2分)(5)样品中含有氯化物杂质;烘干时失去了部分结晶水(2分,任写一个)23.(7分)(2)洗涤(1分)(3)(126b/217a)×100%(2分,没有写100%不扣分,)(4)用止水夹夹在A处,通过分液漏斗滴加水,一段时间后若水不能顺
2、利滴加,说明甲气密性好,否则气密性不好(2分,其它合理答案皆可)[来源:www.shulihua.net]饱和NaHSO3溶液或非极性溶剂如CCl4等(1分)(5)①没有吸收SO2中水蒸气的装置②球形干燥管与空气相通③反应结束后,装置内残留的SO2不能完全排出(1分,答一点即可,其它合理答案酌情给分)24.(11分)(1)碳碳双键(1分)羧基(1分)CH3CH2COOH(1分)[来源:www.shulihua.net](2)2-溴丙酸或α-溴丙酸(2分)(3分)[来源:www.shulihua.netwww.shulihu
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