Silicates as the base of the Earth crust Silica and compounds derived from it, silicates, constituteca. 90% of the Earth crust substances. Silica gives rise to a beautiful meterial-glass. Nobody knows exactly how glass was discovered. There is a well-favoured story related to phoenician sailors who fused occassionally sea sand and soda ash. It is likely that they discovered the secret of "liquid glass" (LGL) sodium metasilicate (Na_(2)SiO_(3)) soluble in water. Determine the pH of 0.1 M aqueous solution of copper sulphate at 25^(@)C assuming that its hydrolysis occurs in small degree only. Use the value of the first acidity constant of [Cu(H_(2)O)_(4)]^(2+) K_(a)=1xx10^(-7) M.

Silicates as the base of the Earth crust Silica and compounds derived

1.	Silicates as the base of the Earth crust Silica and compounds derived from it, silicates, constituteca. 90% of the Earth crust substances. Silica gives rise to a beautiful meterial-glass. Nobody knows exactly how glass was discovered. There is a well-favoured story related to phoenician sailors who fused occassionally sea sand and soda ash. It is likely that they discovered the secret of "liquid glass" (LGL) sodium metasilicate (Na_(2)SiO_(3)) soluble in water. Determine the pH of 0.1 M aqueous solution of copper sulphate at 25^(@)C assuming that its hydrolysis occurs in small degree only. Use the value of the first acidity constant of [Cu(H_(2)O)_(4)]^(2+) K_(a)=1xx10^(-7) M.
Answer» ANSWER :A