[解題] 國二 理化 酸與鹼(鹽酸)
1.年級:國二下
2.科目:理化
3.章節:翰林第三章第二節
4.題目:
要選擇「如何辨別出鹽酸」,有兩個選項:
1.將鹽酸與少許碳酸鈣反應
2.將鹽酸與氨水反應
5.想法:
因為這是我第一次教這個範圍,如果我的想法很糟糕請老師們包涵QQ
(1)HCL+CaCO3 -> CaCl2 + CO2 + H2O
(2)HCL+NH4OH -> NH4CL + H2O
我自己是覺得會產生氣體,所以應該選碳酸鈣,但答案是氨水..
不知道哪裡出了問題,請專家們協助解答,謝謝~!!
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