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116问答网 > 问这些物质滴入紫甘蓝水以后的颜色及酸碱性？

问这些物质滴入紫甘蓝水以后的颜色及酸碱性？

肥皂水苹果汁雪碧水矿泉水白醋牛奶清洁剂

2025-03-15 16:24:03

推荐回答（2个）

回答1：

像苹果汁这样，能使紫甘蓝汁变红的物质，叫做酸性物质；像肥皂水这样，能使紫甘蓝水变绿的物质，叫做碱性物质；像盐水一样，不能使紫甘蓝水变色的物质，叫做中性物质；类似紫甘蓝汁这样的物质，由于能够分辨物质的酸性和碱性，称为酸碱指示剂。

所以看上面物质属于那种就可以判断。不能只要答案，要知道本质。

回答2：

为什么是滴入紫甘蓝水？
如果是直接问这些物质的酸碱性我可能还知道。

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