10/11 The first step in the production of high purity silicon for The first step in the production of high purity silicon for semiconductors is represented by this equation: SiO2{s) + 2C(s) –→ Si(s) + 2CO(g) A H° = 689.9 kJ semiconductors is represented by this equation: SIO2(s) + 2C( Si(s) + 2CO(g) A Hº = 689.9 kJ Find A Srxn° for the production of pure silicon, given the following data: S° for C = 5.7 J/mol*K, for CO = 197.6 J/mol*K, for Si = 18.8 Using the value of A Srxnº you calculated from question 10, determine A G° for the reaction at 25 °C. J/mol*K and for SIO2 = 41.8 J/mol*K. O J/mol*K O 329.1 kJ/mol 360.8 J/mol"K 582.3 kJ/mol O 2314 J/mol*K O O KJ/mol O -360.8 J/mol*K O 106.8 kJ/mol O 168.9 J/mol*K -106.8 kJ/mol 33. The first step in the production of high purity silicon for semiconductors is represented by this equation: SiO2(s) + 2C(s) – Si(s) + 2CO(g) A H° = 689.9 kJ Using the value of A Srxn you calculated from question 10 and/or the value of A G° for the reaction at 25 °C you found in question 11, find the minimum temperature in °C at which this reaction is spontaneous. Assume that A H° and A Sº do not vary with temperature. -271.2 oC 1.912 oC 1639 oC 1912 oC 1614 oC
10/11 The first step in the production of high purity silicon for The first step in the production of high purity silicon for semiconductors is represented by this equation: SiO2{s) + 2C(s) –→ Si(s) + 2CO(g) A H° = 689.9 kJ semiconductors is represented by this equation: SIO2(s) + 2C( Si(s) + 2CO(g) A Hº = 689.9 kJ Find A Srxn° for the production of pure silicon, given the following data: S° for C = 5.7 J/mol*K, for CO = 197.6 J/mol*K, for Si = 18.8 Using the value of A Srxnº you calculated from question 10, determine A G° for the reaction at 25 °C. J/mol*K and for SIO2 = 41.8 J/mol*K. O J/mol*K O 329.1 kJ/mol 360.8 J/mol"K 582.3 kJ/mol O 2314 J/mol*K O O KJ/mol O -360.8 J/mol*K O 106.8 kJ/mol O 168.9 J/mol*K -106.8 kJ/mol 33. The first step in the production of high purity silicon for semiconductors is represented by this equation: SiO2(s) + 2C(s) – Si(s) + 2CO(g) A H° = 689.9 kJ Using the value of A Srxn you calculated from question 10 and/or the value of A G° for the reaction at 25 °C you found in question 11, find the minimum temperature in °C at which this reaction is spontaneous. Assume that A H° and A Sº do not vary with temperature. -271.2 oC 1.912 oC 1639 oC 1912 oC 1614 oC
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
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Transcribed Image Text:10/11
The first step in the production of high purity silicon for
The first step in the production of high purity silicon for
semiconductors is represented by this equation: SiO2{s) + 2C(s)
Si(s) + 2CO(g) A H° = 689.9 kJ
semiconductors is represented by this equation: SIO2(s) + 2C(
Si(s) + 2CO(g) A H° = 689.9 kJ
Find A Srxn° for the production of pure silicon, given the following
data: S° for C = 5.7 J/mol*K, for CO = 197.6 J/mol*K, for Si = 18.8
Using the value of A Srxnº you calculated from question 10,
determine A G° for the reaction at 25 °C.
J/mol*K and for SiO2 = 41.8 J/mol*K.
O O J/mol*K
329.1 kJ/mol
O 360.8 J/mol*K
582.3 kJ/mol
O 2314 J/mol*K
O O kJ/mol
O -360.8 J/mol*K
O 106.8 kJ/mol
O 168.9 J/mol*K
O -106.8 kJ/mol
33.
The first step in the production of high purity silicon for
semiconductors is represented by this equation: SiO2(s) + 2C(s)
Si(s) + 2CO(g) A Hº = 689.9 kJ
%3D
Using the value of A Srxn you calculated from question 10 and/or
the value of A G° for the reaction at 25 °C you found in question 11,
fınd the minimum temperature in °C at which this reaction is
spontaneous. Assume that A H° and A Sº do not vary with
temperature.
-271.2 oC
1.912 oC
1639 oC
1912 oC
1614 oC
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