問題詳情
3. The following unbalanced reaction occurs in basic media:
Fe2+ + Cr2O72- → Fe3+ + Cr3+
The coefficient for water in the balanced equation is _______ and water appears on the _______ side of the equation.
(A) 14, left
(B) 14, right
(C) 7, right
(D) 7, left
(E) none of these
參考答案