Properties of borax are represented by the following road map. Identify the compounds 'A' to 'D' and explain the reaction involved.

Engineering

Chemistry

The Halogen Family and Properties

Question

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Beware is Na₂ B₄O₇⋅10H₂O
Reactions are:- ${Na}_{2} B_{4} O_{7} . 10 H_{2} O + {NH}_{4} Cl \to \underset{(Boron nitride)}{BN + NaCl} + H_{2} O + HCl$

Na₂B₄O₇.10H₂O + 2HCl → 4B(OH)₃ + 2NaCl + 5H₂O

$B {(OH)}_{3} + {NH}_{3} \overset{H_{2} O}{\to} BN + 3 H_{2} O$

Na₂B₄O₇.10H₂O + 2NaOH → 4NaBO₂ + 11H₂O

$B_{2} O_{3} \to_{∆}^{Na} B + \underset{(Boron)}{{Na}_{2} O}$

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