MCQ
Primary amines react with nitrous acid to yield
- AInsoluble nitrite salts
- BYellow oily layer
- ✓Nitrogen gas
- DAzo dye
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$(ii) $ An acid is an electron pair acceptorThe above statements $(i) $ and $(ii)$
Reason : Red phosphorus consists of $P_4$ tetrahedral units linked to one another to form linear chains.
$O(g) + e^- \to O^-(g); \Delta H = - 142 \,kJ \,mol^{-1}$
$O^-(g) + e \to O^{2-} (g); \Delta H = 844\, kJ \,mol^{-1}$
This is because
Given :
Molar mass $N =14\,g\,mol ^{-1} ; O =16\,g\,mol ^{-1} ; C =12\,g\,mol ^{-1} ; H =1\,g\,mol ^{-1}$;