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Cân bằng phương trình Mg+HCl->MgCl2+H2 bằng phương pháp thăng bằng

Sagot :

AmaraDangTranidn

quá trình oxi hóa: Mg0 -> Mg2+ + 2e-

quá trình khử: 2H+ + 2e- -> H2 (cần 2 H+ để tạo 1 H2)

----> chỉ cần thêm 2 vào trước HCl (vì H+ là do HCl cung cấp)

----> Mg + 2HCl -> MgCl2 + H2

yay :)

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