Tuesday
October 21, 2014

Homework Help: AP Chemistry

Posted by Gabriella on Tuesday, October 29, 2013 at 6:40pm.

Calculate the entropy change when 4.44g of H2 reacts with O2 according to the reaction
2H2(g) + O2(g)→2H2O(ℓ)
at 298 K and 1 atm pressure. The stan-
dard molar enthalpy of formation of H
2O(ℓ) at 298 K is −285.8 kJ/mol. The corresponding free energy of formation is −237.2 kJ/mol.
Answer in units of J/K

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