Chemistry, 28.12.2019 03:31 camila9022
Determine the heat of reaction (δhrxn) for the combustion of ethanol (c2h5oh) by using heat of formation data: c2h5oh (l) + 3 o2 (g) → 2 co2 + 3 h2o (g)
Answers: 2
![\Delta H_{rxn}=\sum [n_{i}\times \Delta H_{f}^{0}(product)_{i}]-\sum [n_{j}\times \Delta H_{f}^{0}(reactant_{j})]](/tpl/images/0435/2901/43912.png)
and 
are number of moles of product and reactant respectively (equal to their stoichiometric coefficient).
is standard heat of formation.![\Delta H_{rxn}=[2mol\times \Delta H_{f}^{0}(CO_{2})_{g}]+[3mol\times \Delta H_{f}^{0}(H_{2}O)_{g}]-[1mol\times \Delta H_{f}^{0}(C_{2}H_{5}OH)_{l}]-[3mol\times \Delta H_{f}^{0}(O_{2})_{g}]](/tpl/images/0435/2901/adad7.png)
![\Delta H_{rxn}=[2mol\times -393.509kJ/mol]+[3mol\times -241.818kJ/mol]-[1mol\times -277.69kJ/mol]-[3mol\times 0kJ/mol]](/tpl/images/0435/2901/6491b.png)
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Determine the heat of reaction (δhrxn) for the combustion of ethanol (c2h5oh) by using heat of forma...
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