想問點解眼藥水有HCI?

2010-06-01 10:26 am
HCI是氫氯酸,佢是腐蝕性的,為何會出現在眼藥水裡呢?那豈不是很危險?

回答 (2)

2010-06-01 11:58 pm
✔ 最佳答案
Yes , isolated HCl is very acidic but in eyedrop , it is only few % & the active ingradient is a chemical cpd combined called so & so Hydrochloride , e.g.Phenylephrine Hydrochloride . The HCl is combined with a chemical so it is not acidic & corrosive any more !
2010-06-05 9:20 am
因為酸與它的鹽會生成緩衝溶液,緩衝溶液是加入少量酸或鹼,pH只有輕微改變。
眼藥水也是緩衝溶液。


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