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pH-Werte im Alltag

PH-Wert von Blut
7,4
pH-Wert von Magensaft
2
pH-Wert von Speichel?
6,4
pH-Wert von reinem Wasser?
7
pH-Wert von 3,5%iger Salzsäure?
0
pH-Wert von 3%iger Natronlauge?
14