[解題] 國二 理化 酸鹼鹽
1.年級:國二
2.科目:理化
3.章節:酸鹼鹽
4.題目:
現有 pH = 1 的鹽酸、硫酸、醋酸,和足量的 Mg 完全反應後,
三者產生的氫氣量一樣多,求三種酸體積的排序?
A: 醋酸 > 鹽酸 > 硫酸
5.想法:
我是有段時間沒碰理化的數學老師 (汗) 被學生順便問到但是解不出來 QQ
我的想法是看解離出來的氫離子都是每公升 0.1 莫耳,
而且氫離子數量一樣多,所以求氫離子個數
鹽酸:1 x 0.1 x 鹽酸量
硫酸:2 x 0.1 x 硫酸量
醋酸:1 x 0.1 x 醋酸量
所以硫酸最少,但是鹽酸跟醋酸我不會比…囧>
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