
Interpretation:
The amount of BaO that can be added to 1 kg of SiO2 under given conditions should be determined and comparison should be done with addition of Li2O in SiO2.
Concept Introduction:
While glass formation it is important to study chemical, structural and other factors that decide the limits within any type of material that can exist. During the manufacturing of glass the parameters mandatory are the stability of glass, physical nature of glass, inorganic elements and compounds, viscosity, etc. even parameters like rate of cooling, crystallization are very important.

Answer to Problem 15.37P
The amount of BaO that is 1257 g is more than
Explanation of Solution
Given:
Ratio of O:S = 2.5
Where,
fn = mole fraction of BaO
2.5 =
The molecular weight of
Silica = 60.08 g/mol
BaO = 137.3 g/mol+16g/mol
=153.3 g/mol
Glass to be produce with
BaO <_ 33.0 mol%
Weight of % BaO is
Weight % BaO =
Amount of BaO required = x grams in 1000 g of
Weight of BaO =
Now, for mole fraction of
2.5=
Molecular weight of silica = 60.08 g/mol
And of
= 29.88 g/mol
Adding
Let the amount of
Amount is
Weight % of
Thus, the amount of BaO that is 1257 g is more than
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Chapter 15 Solutions
Essentials Of Materials Science And Engineering
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