Chemistry 4.09 Quiz: Writing Thermochemical Equations Cheat Sheet
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For the reaction, CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l), ΔH = -890 kJ, what will be the change in enthalpy when 3 moles of methane react in excess oxygen?
-2.67 × 103 kJ
Which of the following is a correctly written thermochemical equation?
C3H8(g) + O2(g) → CO2(g) + H2O(l), ΔH = 2,220 kJ/mol
How does a phase change affect a thermochemical equation?
It can affect the ΔH value.
In which of the following thermochemical equations would the ΔH be considered a heat of solution?
NH4Cl (s) → NH4 (aq) + Cl- (aq), ΔH = +14.8 kJ/mol
Which of the following enthalpies of reaction would the reaction represented by the diagram have?
ΔH < 0