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230问答网 > 98%的浓硫酸中的98%指的是什么体积分数还是质量分数

98%的浓硫酸中的98%指的是什么体积分数还是质量分数

2025-04-04 10:14:44

推荐回答（1个）

回答1：

质量分数，可以理解成98g硫酸加2克水，但实际不是，硫酸的特性决定了做不到100%的纯硫酸，也就是工艺上最高也就只能做到98%了，再高就是发烟硫酸了，里面含有SO3。固体和液体没有标明的情况下一般是质量分数，不过酒精浓度一般都是体积分数。

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