下列哪種鹽是<b>藍色的</b>，為什麼？CuSO<sub>4</sub>·5H<sub>2</sub>O 或 CuSO<sub>4</sub>。

CuSO<sub>4</sub>·5H<sub>2</sub>O呈藍色是因為存在結晶水。加熱時，它會失去結晶水，變成無水硫酸銅CuSO4，這是一種白色粉末。
 

更新於：2022年10月10日

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