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用标准盐酸滴定未知浓度的NaOH溶液时,若测定结果偏高,则产生误差的原因可能是A
用标准盐酸滴定未知浓度的NaOH溶液时,若测定结果偏高,则产生误差的原因可能是A
发布时间:2020-07-14 01:17:14
用标准盐酸滴定未知浓度的NaOH溶液时,若测定结果偏高,则产生误差的原因可能是A.滴定时,装NaOH溶液的锥形瓶未用NaOH溶液润洗B.酸式滴定管用蒸馏水洗后,用标准盐酸润洗C.滴定前,酸式滴定管尖嘴处有气泡,而在滴定后气泡消失D.滴定前以仰视的姿势读取了酸式滴定管的读数,滴定后读数正确
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C
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