When a mixture of NaCl and K2Cr2O7 is gently warmed with concentrated H2SO4: (i) An orange-red vapour is evolved. (ii) The vapour formed, when passed into NaOH solution, gives yellow solution of Na2CrO4 . (iii) Chlorine gas is not evolved at all. (iv) Chromyl chloride gas is formed. (v) SnCl4 used instead of NaCl also gives the same observations.

Question

When a mixture of NaCl and K2Cr2O7 is gently warmed with concentrated H2SO4: (i) An orange-red vapour is evolved. (ii) The vapour formed, when passed into NaOH solution, gives yellow solution of Na2CrO4 . (iii) Chlorine gas is not evolved at all. (iv) Chromyl chloride gas is formed. (v) SnCl4 used instead of NaCl also gives the same observations. (A) All statements are correct (B) (i), (iii) and (v) statements are correct (C) (i), (ii) and (iv) statements are correct (D) None of the statements are correct

Tardigrade Admin · Accepted Answer

Statements (i), (ii) and (iv) are correct.

C r O_{2} C l_{2}

gas is liberated (orange red coloured). Its reaction with

N a O H

gives yellow solution of

N a_{2} C r O_{4}

, partially covalent halides like

S n C l_{4}

do not give this test.

All statements are correct

(i), (iii) and (v) statements are correct

(i), (ii) and (iv) statements are correct

None of the statements are correct

Statements (i), (ii) and (iv) are correct. CrO2​Cl2​ gas is liberated (orange red coloured). Its reaction with NaOH gives yellow solution of Na2​CrO4​ , partially covalent halides like SnCl4​ do not give this test.

Statements (i), (ii) and (iv) are correct.
$C r O_{2} C l_{2}$ gas is liberated (orange red coloured). Its reaction with $N a O H$ gives yellow solution of $N a_{2} C r O_{4}$ , partially covalent halides like $S n C l_{4}$ do not give this test.