Exp31 - Exp 31 The Thermodynamics of the Dissolution of Borax p 347 1 To determine the solubility product(Ksp of borax as a function of temperature 2 To

Exp31 - Exp 31 The Thermodynamics of the Dissolution of...

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Exp. 31 – The Thermodynamics Exp. 31 – The Thermodynamics of the Dissolution of Borax p. of the Dissolution of Borax p. 347 347 1. 1. To determine the solubility product (K To determine the solubility product (K sp ) of ) of borax as a function of temperature borax as a function of temperature 2. 2. To determine the standard free energy ( To determine the standard free energy ( Δ Δ G), G), standard enthalpy ( standard enthalpy ( Δ Δ H), and standard H), and standard entropy ( entropy ( Δ Δ S) changes for the dissolution of S) changes for the dissolution of borax in an aqueous solution. borax in an aqueous solution.
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Exp. 31 – Introduction Exp. 31 – Introduction Large deposits of borax are found in Death Valley in the Mojave Desert in California. Borax is mined as either: tincal, Na 2 B 4 O 5 (OH) 4 ·8H 2 O, or kernite, Na 2 B 4 O 7 ·4H 2 O.
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Exp. 31 – Introduction Exp. 31 – Introduction Uses for borax: Cleansing agent Manufacture of glazing paper and varnishes Flux in soldering and brazing Manufacture of borosilicate glass.
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Borosilicate Glass Borosilicate Glass Borosilicate glass is stronger than "soft" glass and has been used for everything from stovetop cookware to nuclear waste containment. One of its most frequent uses is to make scientific glassware such as beakers and test tubes.
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