1.

When conc. H_2SO_4is added to s~lution of potasium dichromate

Answer»

A yellow solid of chromate sepearates out
A yellow solid of CR (VI) OXIDE sepearates out
A purple red solid of chromate separates out
A purple red solid of Cr (VI) OXIDES seperates out

Solution :Conc, `H_2SO_4` acts as dehydrating agent
`K_2Cr_2O_7 + H_2SO_4 rarr H_2Cr_2O_7 rarr H_2O + 2CrO_3`


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