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为什么用醋泡鸡蛋会变大有气泡
更新时间: 2020-09-22 00:00:00  

首先,碳酸钙是鸡蛋壳主要成分,它可以与醋中的醋酸反应生成醋酸钙和二氧化碳而产生气泡。

然后,与鸡蛋壳相连的那层膜是半透膜,能允许醋里面的水等小分子物质进入鸡蛋内部,鸡蛋内部的蛋白质大分子则无法穿出,所以才会膨胀变大。

关键词: 为什么 鸡蛋 气泡

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