A green oxide of chromium A on fusion with KOH and KNO3, gives a yellow compound B. The aqueous solution of B on acidification with diluted H2SO4 gives an Orange coloured  compound C. Identify A,B,C and write down balanced chemical equations involved. 

Asked by mridulabarua05 | 4th Mar, 2019, 11:35: AM

Expert Answer:

 
The chemical equations are as follows:
 
stack 2 Cr subscript 2 straight O subscript 3 with left parenthesis straight A right parenthesis below plus space 8 KOH space plus space 3 straight O subscript 2 space rightwards arrow with blank on top space stack 4 straight K subscript 2 CrO subscript 4 with left parenthesis straight B right parenthesis below space plus space 4 straight H subscript 2 straight O

stack 2 straight K subscript 2 CrO subscript 4 with left parenthesis straight B right parenthesis below space plus space straight H subscript 2 SO subscript 4 space rightwards arrow with blank on top stack straight K subscript 2 Cr subscript 2 straight O subscript 7 with left parenthesis straight C right parenthesis below space plus space straight K subscript 2 SO subscript 4 space plus space straight H subscript 2 straight O

Answered by Ramandeep | 4th Mar, 2019, 12:54: PM