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ctvloga399
2 năm trước
Cho phản ứng: Na2SO3 + KMnO4 + NAHSO4 ----> Na2SO4 + MnSO4 +K2SO4 + H2O. Tổng hệ số của các chất (là những số nguyên, tối giản) trong phương trình phản ứng là A. 47. B. 27. C. 31. D. 23. Giải chi tiết câu 31 giúp mình vs ( giải bằng phương pháp thăng bằng e)
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