MHT CET · Chemistry · s Block Elements
What products are obtained when beryllium oxide is treated separately with aq. HCl and aq. NaOH solutions respectively?
- A \(\mathrm{BeCl}_2\) and \(\mathrm{Be}(\mathrm{OH})_2\)
- B \(\mathrm{BeCl}_2\) and \(\mathrm{Na}_2 \mathrm{BeO}_4\)
- C \(\mathrm{Be}(\mathrm{OH})_2\) and \(\mathrm{BeCl}_2\)
- D \(\mathrm{BeCl}_2\) and \(\mathrm{Na}_2 \mathrm{BeO}_2\)
Answer & Solution
Correct Answer
(D) \(\mathrm{BeCl}_2\) and \(\mathrm{Na}_2 \mathrm{BeO}_2\)
Step-by-step Solution
Detailed explanation
\(\begin{aligned}
& \mathrm{BeO}+2 \mathrm{HCl}_{(\mathrm{aq})} \longrightarrow \mathrm{BeCl}_2+\mathrm{H}_2 \mathrm{O} \\
& \text { Beryllium chloride } \\
& \mathrm{BeO}+\mathrm{NaOH}_{(\mathrm{aq})} \underset{\text { Sodium beryllate }}{\longrightarrow} \mathrm{Na}_2 \mathrm{BeO}_2
\end{aligned}\)
& \mathrm{BeO}+2 \mathrm{HCl}_{(\mathrm{aq})} \longrightarrow \mathrm{BeCl}_2+\mathrm{H}_2 \mathrm{O} \\
& \text { Beryllium chloride } \\
& \mathrm{BeO}+\mathrm{NaOH}_{(\mathrm{aq})} \underset{\text { Sodium beryllate }}{\longrightarrow} \mathrm{Na}_2 \mathrm{BeO}_2
\end{aligned}\)
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