The correct option is(A): 1 and 2.
Only \(\left( NH _{4}\right)_{2} Cr _{2} O _{7}\) and \(NH _{4} NO _{2}\) give \(N _{2}\) on
heating.
(i) \(\left( NH _{4}\right)_{2} Cr _{2} O _{7} \stackrel{\Delta}{\longrightarrow} Cr _{2} O _{3}+4 H _{2} O + N _{2}\)
(ii) \({NH4NO2 ->[\text{Thermal decomposition}][{\Delta}] 2 H_2O +N2}\)
The number of oxygen atoms present in chemical formula of fuming sulphuric acid is _______.
For the reaction:
\[ 2A + B \rightarrow 2C + D \]
The following kinetic data were obtained for three different experiments performed at the same temperature:
\[ \begin{array}{|c|c|c|c|} \hline \text{Experiment} & [A]_0 \, (\text{M}) & [B]_0 \, (\text{M}) & \text{Initial rate} \, (\text{M/s}) \\ \hline I & 0.10 & 0.10 & 0.10 \\ II & 0.20 & 0.10 & 0.40 \\ III & 0.20 & 0.20 & 0.40 \\ \hline \end{array} \]
The total order and order in [B] for the reaction are respectively: