iran-konkur 2020 Q232

iran-konkur · Other · konkur-riazi_1399_specialized_old-curriculum Not Maths
232 – Which statement about the compounds with the ``dot-line'' structures below is correct?
$(H=1,\ C=12,\ O=16,\ Br=80\ \text{: g.mol}^{-1})$
[Figure: Two structural formulas labeled (I) and (II); compound (I) contains a carbonyl group (C=O) and compound (II) is a bicyclic structure]
  1. The difference in molar mass of the two compounds is 4 g.
  2. 3.8 g of compound (II) reacts with 6 g of bromine completely.
  3. The two compounds are isomers and compound (I) has a carbonyl functional group.
  4. For complete combustion of 7.5 g of compound (I), 14.56 L of oxygen gas is consumed at STP.
\textbf{232 –} Which statement about the compounds with the ``dot-line'' structures below is correct?

$(H=1,\ C=12,\ O=16,\ Br=80\ \text{: g.mol}^{-1})$

\textit{[Figure: Two structural formulas labeled (I) and (II); compound (I) contains a carbonyl group (C=O) and compound (II) is a bicyclic structure]}

\begin{enumerate}
    \item The difference in molar mass of the two compounds is 4 g.
    \item 3.8 g of compound (II) reacts with 6 g of bromine completely.
    \item The two compounds are isomers and compound (I) has a carbonyl functional group.
    \item For complete combustion of 7.5 g of compound (I), 14.56 L of oxygen gas is consumed at STP.
\end{enumerate}