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将下列溶液敞口放置在空气中一段时间后，溶液质量因发生化学反应而增加的是（ ）
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下列物质在空气中敞口放置一段时间后因发生化学变化而使质量增加的是
浓盐酸
浓硫酸
氯化钠
生石灰
下列溶液敞口放置在空气中一段时间后不考虑水分的蒸发①浓盐酸②浓硫酸③氢氧化钠溶液④食盐溶液⑤石灰水填
下列物质敞口放置在空气中一段时间后因发生化学变化溶液质量减少的是
浓硫酸
NaOH溶液
澄清的石灰水
浓盐酸
下列四种物质露置在空气中一段时间后由于发生化学变化使溶液质量增加的是
浓硫酸
浓盐酸
氢氧化钠溶液
澄清石灰水
下列物质敞口放置在空气中一段时间后因发生化学反应质量增加的是
碳酸钙
浓盐酸
浓硫酸
氢氧化钠溶液
下列溶液在空气中敞口放置后溶液质量因发生化学反应而减小的是
石灰水
浓硫酸
浓盐酸
烧碱溶液
下列物质敞口放置在空气中一段时间后因发生化学反应质量增加的是
碳酸钙
浓硫酸
浓盐酸
氢氧化钠
将浓盐酸浓硫酸敞口放置一段时间它们共同的变化是
颜色发生改变
发生化学变化
质量变大
溶质的质量分数变小
下列药品未经密封保存敞口放置一段时间后质量增加并发生化学反应的是①苛性钠②碳酸③浓盐酸④浓硫酸⑤熟石
①③
②④
①⑤
④⑤
下列物质在空气中敞口放置一段时间后因发生化学变化而使质量增加的是
浓盐酸
浓硫酸
氯化钠
生石灰
下列物质放置在空气中一段时间后因发生化学变化而质量变大的是
浓盐酸
浓硫酸
烧碱
食盐
下列物质敞口放置在空气中一段时间后因发生化学反应使质量增加的是
浓硫酸
氯化钠
烧碱
浓盐酸
将浓硫酸浓盐酸敞口放置一段时间它们的共同变化是
颜色发生改变
发生化学变化
质量减少
溶质的质量分数变小
将一定量的浓硫酸和浓盐酸分别敞口放置在空气中一段时间后下列说法正确的是
溶液的质量都增加
溶液的质量都减少
溶液的溶质质量分数都增大
溶液的溶质质量分数都减小
下列溶液在空气中敞口放置后溶液质量因发生化学反应而减小的是
石灰水
浓硫酸
浓盐酸
烧碱溶液
下列物质敞口放置在空气中一段时间后因发生化学反应质量增加的是
碳酸钙
浓硫酸
浓盐酸
氢氧化钠
下列物质敞口放置在空气中一段时间后因发生化学反应使质量增加的是
浓硫酸
氯化钠
烧碱
浓盐酸
将浓硫酸浓盐酸敞口放置一段时间它们的共同变化是
颜色发生改变
发生化学变化
溶质的质量分数变小
质量减少
下列说法错误的是
浓盐酸敞口放置一段时间后，溶液的质量会减少
浓盐酸在空气中会冒白烟
浓硫酸敞口一段时间后，溶液的质量会增加
浓硫酸溶于水时会放出大量的热
下列物质敞口放置在空气中一段时间后因发生化学反应使质量增加的是
浓硫酸
氯化钠
烧碱
浓盐酸
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