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稀释

维基百科,自由的百科全书

稀释(英語:dilution)指对现有溶液加入更多溶剂而使其浓度减小的过程。在稀释後溶液的濃度減小,但溶質的總量不變。

例如將一莫耳(約58.5克)的食鹽(溶質)溶在一公升的水(溶劑)中,溶液的體積莫爾濃度為1M,若再加入一公升的水,溶液的體積莫爾濃度變為0.5M,但溶液食鹽的總量仍為一莫耳。

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