Question

5. Extra pure nitrogen can be prepared by heating
(a) NH4Cl (aq) + NaNO2 (aq)
(6) (NH4)2Cr207
(c) NH_NO2 (d) Ba(N3)2​

Answer 1

Answer:

d ....bro check NCERT it will........produce purest form of nitrogen on heating

Answer 2

Explanation:

Very pure nitrogen can be obtained by the thermal decomposition of sodium or barium azide.

2NaN

3

573K

2Na+3N

2

Azide salt of barium can be obtained in the purest form as well as the decomposition product contains solid Ba as a by-product along with gaseous nitrogen, hence no additional step of separation is required.

Ba(N

3

)

2heat Ba+3N²