1.

A brown coloured mixture of two gases is obtained by the reduction of 6N nitric acid with metallic copper. The mixture on cooling condenses to a blue liquid which on freezing (-30^@ C) gives a blue solid.The correct choice for blue liquid or solid is :

Answer»

It is REFERRED to as the ANHYDRIDE of nitrous acid
It is an acidic oxide and hence dissolves in alkalies producing nitrites
It can also be prepared by the action of 50% `HNO_3` on arsenious oxide and then cooling to 250 K
All of these

Solution :`2Cu+6HNO_3 to 2Cu(NO_3)_2 + NO +NO_2 +3H_2O`
`NO+NO_2 OVERSET(-20^@C)HARR N_2O_3 ("blue"), (A) 2HNO_2 to N_2O_3 +H_2O`
(B)`N_2O_2+2KOH to 2KNO_2+ H_2O`
(C )`2NHO_3 + As_2O_3 + 2H_2O to`

All options are correct.


Discussion

No Comment Found

Related InterviewSolutions