$\begin{array}{1 1} Cr^{3+}\; and Cr_2O_7^{2-}\; are\; formed \\ Cr_2O_7^{2-}\; and\; H_2O\; are\; formed \\ CrO_4^{2-}\; is\; reduced \;to\; +3\; state\; of\; Cr \\ CrO_4^{2-} is\; reduced\; to\; +7\; state\; of\; Cr \end{array}$
