Q. One of the product formed when $K_{2}Cr_{2}O_{7}$ reacts with conc $H_{2}SO_{4}$ in cold is
A) $CrO_{3}$
B) ${Cr}_{2}\left( SO_{4} \right)_{3}$
C) $Cr_{2}O_{3}$
D) $CrO_{4}Cl_{2}$
Explanation
(a)
$K_{2}Cr_{2}O_{7} + {2H}_{2}SO_{4}\overset{Cold\ }{\rightarrow}2CrO_{3} + 2{KHSO}_{4} + H_{2}O$ $CrO_{3}$ is highly acidic and oxidising and is called chromic acid
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.