Potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride, gives brown-red vapours of :

Question

Potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride, gives brown-red vapours of : (A) CrO3 (B) CrCl3 (C) CrO2Cl2 (D) Cr2O3

Tardigrade Admin · Accepted Answer

Solid potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride gives orange red vapours of a volatile oily liquid

C r O_{2} C l_{2}

K_{2} C r_{2} O_{7} + 4 N a Cl + 6 H_{2} S O_{4} \to 2 KH S O_{4} + 4 N a H S O_{4} + 2 C r O_{2} C l_{2}

chromyl chloride

Q. Potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride, gives brown-red vapours of :

$C r O_{3}$

$C r C l_{3}$

$C r O_{2} C l_{2}$

$C r_{2} O_{3}$

Solid potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride gives orange red vapours of a volatile oily liquid $C r O_{2} C l_{2}$
$K_{2} C r_{2} O_{7} + 4 N a Cl + 6 H_{2} S O_{4} \to 2 KH S O_{4} + 4 N a H S O_{4} + 2 C r O_{2} C l_{2}$
chromyl chloride

Q. Potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride, gives brown-red vapours of :

CrO3​

CrCl3​

CrO2​Cl2​

Cr2​O3​

Solid potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride gives orange red vapours of a volatile oily liquid CrO2​Cl2​ K2​Cr2​O7​+4NaCl+6H2​SO4​→2KHSO4​+4NaHSO4​+2CrO2​Cl2​ chromyl chloride

$C r O_{3}$

$C r C l_{3}$

$C r O_{2} C l_{2}$

$C r_{2} O_{3}$

Solid potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride gives orange red vapours of a volatile oily liquid $C r O_{2} C l_{2}$
$K_{2} C r_{2} O_{7} + 4 N a Cl + 6 H_{2} S O_{4} \to 2 KH S O_{4} + 4 N a H S O_{4} + 2 C r O_{2} C l_{2}$
chromyl chloride