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Chemistry, 24.07.2021 05:50 laylay120

Cho 4 dung dịch không màu có cùng nồng độ mol là NaOH, NaCl, HCl và Phenolphtalein, chứa trong 4 bình mất nhãn. Chỉ dùng ống hút, ống nghiệm có chia độ (không dùng thêm hóa chất nào khác kể cả nguồn điện, nguồn nhiệt), hãy nhận biết mỗi dung dịch trên.

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Cho 4 dung dịch không màu có cùng nồng độ mol là NaOH, NaCl, HCl và Phenolphtalein, chứa trong 4 bìn...
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