The difference between and is (), when the combustion of one mole of heptane (l) is carried out at a temperature , is equal to:

(1) (2) (3) (4)

Question

The difference between  and  is (), when the combustion of one mole of heptane (l) is carried out at a temperature , is equal to:

(1)   (2)   (3)   (4)

Canvas Classes · Accepted Answer

Strategy:
 For a combustion reaction involving an ideal gas, the difference between enthalpy and internal energy change is given by .

Step 1: Write the balanced combustion equation
Reaction for Heptane:

Step 2: Calculate 
Only include gaseous species:

.

Step 3: Conclusion
.

More questions from Thermodynamics