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bài 1 các chất và ion cho dưới đây đóng vai trò axit, bazơ, lưỡng tính hay trung tính ? tại sao ? nh4+, al(h20)3+, s2-, zn(oh)2, na+, cl-, so42-, no3- , co32- hòa tan các muỗi nacl, nh4cl, alcl3, na2s, kno3, na2co3 vào nước thành 6 dung dịch, sau đó cho vào mỗi dung dịch một ít quỳ tím. hỏi dung dịch có màu gì? tại sao?
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bài 1 các chất và ion cho dưới đây đóng vai trò axit, bazơ, lưỡng tính hay trung tính ? tại sao ? nh...
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