Which of the following compounds is formed in | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Answer:- $(A)$ MetaborateOn heating,borax loses its water of crystallization and swells up to form a fluffy mass. On further heating,it melts to g

Vedclass · Accepted Answer

Metaborate

Vedclass · Answer

(A) Answer:- $(A)$ MetaborateOn heating,borax loses its water of crystallization and swells up to form a fluffy mass. On further heating,it melts to give a clear liquid which solidifies to a transparent glassy bead consisting of sodium metaborate and boric anhydride.$Na_{2}B_{4}O_{7} \cdot 10H_{2}O$ $\xrightarrow{\Delta} Na_{2}B_{4}O_{7}$ $\xrightarrow{\Delta} 2NaBO_{2} + B_{2}O_{3}$In the presence of transition metal oxides,the bead forms colored metal metaborates,e.g.,$CoO + B_{2}O_{3} \rightarrow Co(BO_{2})_{2}$. Thus,metaborate is the key component formed.

Which of the following compounds is formed in the borax bead test?

Similar Questions

On the basis of reactions given below identify $X, Y, Z$.
$Boron \xleftarrow{Mg \, or \, Fe} X \xleftarrow{\Delta} B(OH)_3 + \text{Gas-}Z$
$B(OH)_3 \xleftarrow{H_2O} Y \xrightarrow{2NH_3/\Delta} \text{Inorganic benzene}$

Which of the following statements is incorrect?

Which of the following statements is not true?

Which of the following is the least basic?

In the following reaction,assign the state for the underlined atom in the product of complete hydrolysis at $R.T.$:
$H_4\underline{P}_2O_7 + H_2O \longrightarrow 2H_3PO_4$

Vedclass Test Series

Exam Paper Generator

Online Exam Module