Chemistry, 28.09.2021 01:40 FailingstudentXD
Bài 3: Bằng cách nào có thể nhận biết từng chất trong mỗi cặp chất sau theo phương pháp hóa học:
a) Dung dịch HCl và dung dịch H2SO4. b) Dung dịch NaCl và dung dịch Na2SO4.
c) Dung dịch Na2SO4 và dung dịch H2SO4.
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Bài 3: Bằng cách nào có thể nhận biết từng chất trong mỗi cặp chất sau theo phương pháp hóa học:
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