CHEM 101 - Using Hess's Law to Calculate Enthalpy Change
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YouTubeMatthew Gerner
CHEM 101 - Using Hess's Law to Calculate Enthalpy Change
In this example, we use Hess’s law to calculate the change in enthalpy for a reaction. Find ΔHrxn for the reaction in kJ: 3 C(s) + 4 H2(g) → C3H8(g) Given: C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g) ΔH1 = –2043 kJ C(s) + O2(g) → CO2(g) ΔH2 = –393.5 kJ 2 H2(g) + O2(g) → 2 H2O(g) ΔH3 = –483.6 kJ
19.4K viewsApr 22, 2020
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