Question

Identify the incorrect statement among the following.

• A. Cl2 reacts with excess of NH3 to give N2 and HCl.
• B. Br2 reacts with hot and strong NaOH solution to give NaBr, NaBrO4 and H2O.
• C. Ozone reacts with SO2 to given SO3.
• D. Silicon reacts with NaOH(aq) in the presence of air to give Na2SiO3 and H2O.

Answer 1

Answer: (B)

Br2 reacts with hot and strong NaOH solution to give NaBr, NaBrO4 and H2O.

Answer 2

3Br2 + 6NaOH $\rightarrow$ 5NaBr + NaBrO3 + 3H2O

O3 + SO2 $\rightarrow$ O2 + SO3

Si + 2NaOH + O2 $\rightarrow$NaSiO3 + H2O

CI2 reacts with excess of ammonia to produce ammonium chloride and nitrogen.

\begin{tabular} { l } $2 \mathrm { NH } _ { 3 } + 3 \mathrm { Cl } _ { 2 } \rightarrow \mathrm {~N} _ { 2 } + 6 \mathrm { HCl }$ \ $6 \mathrm { NH } _ { 3 } + 6 \mathrm { HCl } \rightarrow 6 \mathrm { NH } _ { 4 } \mathrm { Cl }$ \ \hline $8 \mathrm { NH } _ { 3 } + 3 \mathrm { Cl } _ { 2 } \rightarrow \mathrm {~N} _ { 2 } + 6 \mathrm { NH } _ { 4 } \mathrm { Cl }$ \end{tabular}