Chemistry - Complete Pblock- Question with Solution | TestHub

Alumino thermite process involves reduction of oxides such as$\mathrm{F}{\mathrm{e}}_2{\mathrm{O}}_3,\hspace{0.33em}\mathrm{M}{\mathrm{n}}_3{\mathrm{O}}_4,\hspace{0.33em}\mathrm{C}{\mathrm{r}}_2{\mathrm{O}}_3$etc. to metals with aluminum.
${\text{Cr}}_{\text{2}}{\text{O}}_{\text{3}}\text{+}\text{2Al}\to {\text{Al}}_{\text{2}}{\text{O}}_{\text{3}}\text{+}\text{2Cr;}\text{ΔH}\text{=}-\text{ve}$