JEE MAIN - Chemistry (2005 - No. 29)
The oxidation state of chromium in the final product formed the reaction between $$K{\rm I}$$ and acidified potassium dichromate solution is :
$$+3$$
$$+2$$
$$+6$$
$$+4$$
解释
$$C{r_2}O_7^{2 - } + 6{{\rm I}^ - } + 14{H^ + }\buildrel \, \over
\longrightarrow 3{{\rm I}_2} + 7{H_2}O + 2C{r^{3 + }}$$
oxidation state of $$Cr$$ is $$3+.$$
oxidation state of $$Cr$$ is $$3+.$$