cân bằng phản ứng oxh-khử

C

chontengi

K2Cr2O7 + HCl \Rightarrow CrCl3 + Cl2 + KCl + H2O

[TEX]Cr_2^{+6}\ \ +6e \to 2Cr^{+3}[/TEX]


[TEX]2Cl^{-1} \ \ -2e \to Cl_2^{0}[/TEX]


K2Cr2O7 + 14HCl --> 2CrCl3 + 3Cl2 + 2KCl + 7H2O
 
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