Answer to Question #68428 in Inorganic Chemistry for Akikl

Question

I have to balance H^+ + Cr2O7^2- +C2H5OH=Cr^3+ +C2H4O +H20
I have to use the Chinese method

Answer 1

Answer:
Let’s divide the following reaction by 2 half-reaction:
Cr2O72- + H+ = Cr3+ + H2O
C2H5OH + = C2H4O + H+
Now we need to balance both this half-reaction separately:
Cr2O72- + 14H+ = 2Cr3+ + 7H2O
6C2H5OH = 6C2H4O + 12H+
Now, we need to summarize both reaction and get balanced equation:
Cr2O72- + 2H+ + 6C2H5OH = 2Cr3+ + 6C2H4O + 7H2O