Question
Chemistry Question on Inorganic chemistry
When chromite ore (A) is fused with sodium carbonate in excess of air and the product is dissolved in water, a yellow solution of compound (B) is obtained. On treating B with sulphuric acid, compound (C) can be crystallized from the solution. When compound (C) is treated with KCI, orange crystals of compound (D) crystallise out. Identify A and D.
A
PbCrO4 , K2CrO4
B
PbCrO4 , K2Cr2O7
C
FeCr2O, K2CrO4
D
FeCr2O4, K2Cr2O7
Answer
FeCr2O4, K2Cr2O7
Explanation
Solution
The correct answer is (D) :FeCr2O4, K2Cr2O7