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酸鹼變彩虹 - The pH Rainbow - YouTube

你知道pH試紙為什麼會變色嗎?人稱「火博士」的科大化學系講師陳鈞傑博士以實驗和理論,詳盡剖析pH測試背後的科學原理。You may have measured pH using a pH paper, but do you know the reason why it changes color? Dr. Ja...