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酚酞遇酸不變色,遇堿變紅 紫色石蕊溶液遇酸變紅,遇堿變藍 1LSB別被誤導
紫色石蕊遇酸變紅,遇堿變藍,遇呈鹼性鹽變藍,遇中性鹽不變色. 無色酚酞遇酸不變,遇堿變紅,遇呈鹼性鹽變紅,遇中性鹽不變色.
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