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the standard enthalpy of formation of gas-phase formaldehyde (CH2O)?   A.  C(atomic, g) + 2H(atomic, g) + O(atomic, g)  →  CH2O(g)   B.  C(graphite, s) + H2(g) + ½ O2(g)  →  CH2O(g)   C.  ½ C2(g) + H2(g) + ½ O2(g)  →  CH2O(g)   D.  CH2O(g)  →  C(atomic, g) + 2H(atomic, g) + O(atomic, g)   E.  C(graphite, s) + 2H(atomic, g) + O(atom

the standard enthalpy of formation of gas-phase formaldehyde (CH2O)?   A.  C(atomic, g) + 2H(atomic, g) + O(atomic, g)  →  CH2O(g)   B.  C(graphite, s) + H2(g) + ½ O2(g)  →  CH2O(g)   C.  ½ C2(g) + H2(g) + ½ O2(g)  →  CH2O(g)   D.  CH2O(g)  →  C(atomic, g) + 2H(atomic, g) + O(atomic, g)   E.  C(graphite, s) + 2H(atomic, g) + O(atom

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions
Section: Chapter Questions
Problem 89GQ: Chloroform, CHCl3, is formed from methane and chlorine in the following reaction. CH4(g) + 3 Cl2(g) ...
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Which one of the following equations defines the standard enthalpy of formation of gas-phase formaldehyde (CH2O)?

  •  
    A. 

    C(atomic, g) + 2H(atomic, g) + O(atomic, g)  →  CH2O(g)

  •  
    B. 

    C(graphite, s) + H2(g) + ½ O2(g)  →  CH2O(g)

  •  
    C. 

    ½ C2(g) + H2(g) + ½ O2(g)  →  CH2O(g)

  •  
    D. 

    CH2O(g)  →  C(atomic, g) + 2H(atomic, g) + O(atomic, g)

  •  
    E. 

    C(graphite, s) + 2H(atomic, g) + O(atomic, g)  →  CH2O(g)

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