${{\rm{K}}_2}{\rm{C}}{{\rm{r}}_2}{{\rm{O}}_7}\mathop \to \limits^\Delta {{\rm{K}}_2}{\rm{Cr}}{{\rm{O}}_4} + {{\rm{O}}_2} + X{\rm{\;}}$ In the above reaction $X\;$ is

${\rm{C}}{{\rm{r}}_2}{{\rm{O}}_3}$

${\rm{C}}{{\rm{r}}_2}{{\rm{O}}_7}$

NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

1 Medium

1 of 1

Analyzing +4 | -1

{\mathrm{K}_2}\mathrm{C}{\mathrm{r}_2}{\mathrm{O}_7}\mathop \to \limits^\Delta {\mathrm{K}_2}\mathrm{Cr}{\mathrm{O}_4} + {\mathrm{O}_2} + X\mathrm{\;}

In the above reaction

X\;

View answer and explanation

Correct option: C

\mathrm{C}{\mathrm{r}_2}{\mathrm{O}_3}

Option C (Cr2O3) is correct because the decomposition of K2Cr2O7 upon heating yields K2CrO4, O2, and Cr2O3.