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  • Borax on hydrolysis and acidification gives a compound P and P on strong heating gives compound Q. Which of the following is the characteristics of Q.  <s

Borax on hydrolysis and acidification gives a compound P and P on strong heating gives compound Q. Which of the following is the characteristics of Q.

 

Option: 1

It is sparingly soluble in water but highly soluble in alcohol.

 


Option: 2

It a strong acid.


Option: 3

It has two 3-centred- 2- electron bonds.

 


Option: 4

All of the above.


Answers (1)

best_answer

\begin{aligned} & \mathrm{Na}_2 \mathrm{~B}_4 \mathrm{O}_7+7 \mathrm{H}_2 \mathrm{O} \rightarrow 2 \mathrm{NaOH}+\underset{(P)}{4 \mathrm{H}_3 \mathrm{BO}_3}\\ & \mathrm{Na}_2 \mathrm{~B}_4 \mathrm{O}_7+2 \mathrm{HCl}+5 \mathrm{H}_2 \mathrm{O} \rightarrow 2 \mathrm{NaCl}+ \underset{(P)}{4 \mathrm{~B}(\mathrm{OH})_3}\\ &\underset{(P)}{\mathrm{H}_3 \mathrm{BO}_3} \stackrel{\triangle}{\longrightarrow} \underset{(Q)}{\mathrm{B}_2 \mathrm{O}_3} \end{aligned}

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Shailly goel

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