The yellow colored solution of Na 2 CrO 4 changes to orange, red on passing CO 2 gas due to the formation of:

Question

The yellow colored solution of Na 2 CrO 4 changes to orange, red on passing CO 2 gas due to the formation of: (A) CrO 5  (B) CrO 3 (C) Na 2 Cr 2 O 7 (D) Na 3 CrO 8

Tardigrade Admin · Accepted Answer

In acidic medium CrO 42- changes to Cr 2 O 72-

Q. The yellow colored solution of $N a_{2} C r O_{4}$ changes to orange, red on passing $C O_{2}$ gas due to the formation of:

$C r O_{5}$

$C r O_{3}$

$N a_{2} C r_{2} O_{7}$

$N a_{3} C r O_{8}$

In acidic medium $C r O_{4}^{2 -}$ changes to $C r_{2} O_{7}^{2 -}$

Q. The yellow colored solution of Na2​CrO4​ changes to orange, red on passing CO2​ gas due to the formation of:

CrO5​

CrO3​

Na2​Cr2​O7​

Na3​CrO8​