In one compartment of a voltaic cell, a graphite electrode dips into an acidic solution of K2Cr2O7and Cr(NO3)3. In The other, a bar of solid tin dips into a Sn(NO3)2 solution. A KNO3 salt bridge joins the two compartments. The tin electrode is negative relative to the graphite. What is the oxidation half-reaction and what is the reduction half-reaction?

the answer is c

tell me if wrong

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.