MCQ
Which of the following compound is most acidic
- ✓

- B

- C

- D






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$NH _{2} CN _{( s )}+\frac{3}{2} O _{2}( g ) \rightarrow N _{2( g )}+ O _{2}( g )+ H _{2} O _{(l)}$
is ............ $kJ$. (Rounded off to the nearest integer)
[Assume ideal gases and $\left. R =8.314\, J\, mol ^{-1} K ^{-1}\right]$
| Mass of dinitrogen | Mass of dioxygen |
| $14\, g$ | $16\, g$ |
| $14\, g$ | $32\, g$ |
| $28\, g$ | $32\, g$ |
| $28\, g$ | $80\, g$ |
Which law of chemical combination is obeyed by the above experimental data ?