3. Calculate the standard enthalphy of acetylene (CH2) form its elements: CH2) 2C(graphite)+ H2() The equations for each step are as follows: C(graphite) + O2(8) H2e) + 2C2H+ 502(8) CO2() AH = -393.5 kJ AH=-285.8 kJ %3D %3D 2 4CO2+ 2HO) AH=-2598.8 kJ %3D 4. The standard enthalpy of formation of hexane can be determined indirectly. Calculate the standard enthalpy of formation of hexane using the enthalpies of combustion (in kJ/mol) given just below. 19 CH14(0) + 6CO) + 7H;Ou) AH = -4163.0 kJ -> 2 Ceruphite) + Oz(g) CO2(e) AH = -393.5 kJ > H2) +O2e) AH = -285.8 kJ ->

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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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CH() + 202e)
Ceraphite) +O2(g) CO2()
2H2+O2e)
AH=-393.5 kJ
AH--571.6 kJ
AH=-890.4 kJ
2H2O)
->
CO) + 2H;Ou)
3. Calculate the standard enthalphy of acetylene (C2H2) form its elements:
C:H)
2C(graphite)+
+H2(s)
The equations for each step are as follows:
C(graphite) + O2(8)
Hue) + Oe
2C2He + 5O2e)
CO2(s)
AH =-393.5 kJ
AH=-285.8 kJ
2.
4CO2) + 2HOu)
AH=-2598.8 kJ
4. The standard enthalpy of formation of hexane can be determined indirectly. Calculate the
standard enthalpy of formation of hexane using the enthalpies of combustion (in kJ/mol)
given just below.
19
AH=-4163.0 kJ
CH140
6CO2) + 7H;Ou)
+
2.
AH =-393.5 kJ
%3D
CO2e)
Ceraphite) + O2(g)
H2ie +O2e)
AH =-285.8 kJ
H2Oay
Transcribed Image Text:CH() + 202e) Ceraphite) +O2(g) CO2() 2H2+O2e) AH=-393.5 kJ AH--571.6 kJ AH=-890.4 kJ 2H2O) -> CO) + 2H;Ou) 3. Calculate the standard enthalphy of acetylene (C2H2) form its elements: C:H) 2C(graphite)+ +H2(s) The equations for each step are as follows: C(graphite) + O2(8) Hue) + Oe 2C2He + 5O2e) CO2(s) AH =-393.5 kJ AH=-285.8 kJ 2. 4CO2) + 2HOu) AH=-2598.8 kJ 4. The standard enthalpy of formation of hexane can be determined indirectly. Calculate the standard enthalpy of formation of hexane using the enthalpies of combustion (in kJ/mol) given just below. 19 AH=-4163.0 kJ CH140 6CO2) + 7H;Ou) + 2. AH =-393.5 kJ %3D CO2e) Ceraphite) + O2(g) H2ie +O2e) AH =-285.8 kJ H2Oay
Date:
Year & Section:
Exercise 1:
Problem Solving:
Solve the following problems with complete solution
1. Carbon occurs in two forms: graphite and diamond. Given the equation:
CO2(e)
CO2(e)
Calculate the AH for the conversion of graphite to diamond:
AH=-393.5 kJ
C(eraphite) + Ozig)
C(diamond) + Ozg)
%3D
AH3-395.4 kJ
->
C(graphite)
C(diamond)
2. Calculate for the change in enthalpy of:
C(eraphite) + 2H22)
Given the following information:
Cigraphite) + O2(e)
2HM) + O2(g)
CHe) + 202e)
CH(e)
AH=-393.5 kJ
CO2(e)
2H;O)
AH=-571.6 kJ
AH = -890.4 kJ
CO2e) + 2H2Ou)
Transcribed Image Text:Date: Year & Section: Exercise 1: Problem Solving: Solve the following problems with complete solution 1. Carbon occurs in two forms: graphite and diamond. Given the equation: CO2(e) CO2(e) Calculate the AH for the conversion of graphite to diamond: AH=-393.5 kJ C(eraphite) + Ozig) C(diamond) + Ozg) %3D AH3-395.4 kJ -> C(graphite) C(diamond) 2. Calculate for the change in enthalpy of: C(eraphite) + 2H22) Given the following information: Cigraphite) + O2(e) 2HM) + O2(g) CHe) + 202e) CH(e) AH=-393.5 kJ CO2(e) 2H;O) AH=-571.6 kJ AH = -890.4 kJ CO2e) + 2H2Ou)
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