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chemistry

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The standard molar entropy value of N2 (g) is 191.5 J/K-mol,
of O2 (g) is 205.0 J/K-mol and of NO2 (g) is 240.0 J/K-mol. From these values
we can calculate the Delta S for the reaction N2 (g) + 2 O2 (g) produces 2 NO2 (g) to be

a. – 156.5 J/K
b. 636.5 J/K
c. 15.5 J/K
d. – 121.5 J/K
e. – 83.5 J/K

help

  • chemistry - ,

    dSrxn = (n*dSo products) - (n*dSo reactants)

  • chemistry - ,

    how do i set this up?

  • chemistry - ,

    .........N2 + 2O2 ==> 2NO2
    .......191.5..205.0...240

    dSrxn = (n*products)-(n*reactants)
    dSrxn = (2*240) -[(191.5+2(205)]

  • chemistry - ,

    d?

  • chemistry - ,

    right.

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