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Question

Chemistry Question on Group 13 Elements

Ordinary glass is formed by mixing of

A

Na2CO3+CaCO3 Na_{2}CO_{3}+CaCO_{3}

B

Na2CO3+CaCO3+ Na_{2}CO_{3}+CaCO_{3}+ silica

C

silica +Na2CO3+Na_{2}CO_{3}

D

silica + borax

Answer

Na2CO3+CaCO3+ Na_{2}CO_{3}+CaCO_{3}+ silica

Explanation

Solution

A mixture of silicates of sodium and calcium obtained by heating sodium carbonate, calcium carbonate and silica at about 1700 K1700\, K, is called ordinary glass or soda glass. Na2CO3l+SiO2+CaCO3−>[1700 K]Na2SiO3⋅CaSiO3ordinary glass⋅4SiO2+CO2 {Na2CO3l +SiO2 + CaCO3->[1700 \,K] \underset{ordinary\, glass}{Na2SiO3 \cdot CaSiO3} \cdot 4SiO2 + CO2}