NEETThermochemistryHard
Question
The enthalpy of combustion of propane (C3H8) gas in terms of given data is :
Bond energy (kJ/mol)
εC-H εO=O εC=O εO-H εC-C
+x1 +x2 +x3 +x4 +x5
Resonance energy of CO2 is - zkJ/mol and ᐃHvaporization [H2O(l)] is ykJ/mol.
Bond energy (kJ/mol)
εC-H εO=O εC=O εO-H εC-C
+x1 +x2 +x3 +x4 +x5
Resonance energy of CO2 is - zkJ/mol and ᐃHvaporization [H2O(l)] is ykJ/mol.
Options
A.8x1 + 2x5 + 5x2 - 6x3 - 8x4 - 4y - 3z
B.6x1 + x5 + 5x2 - 3x3 - 4x4 - 4y - 3z
C.8x1 + 2x5 + 5x2 - 6x3 - 8x4 - y - z
D.8x1 + x5 + 5x2 - 6x3 - 8x4 - 4y + 3z
Solution
C3H8(g) + 5O2 → 3CO2(g) + 4H2O(l)
ᐃCH =
ᐃCH =
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