# Problem: The reaction for the combustion of propane is shown below. C3H8(g) + 5 O2 (g) → 3 CO2 (g)  + 4 H2O (l)    ΔH = - 526.3 kcal/molHow much heat is  released when 71.7 g of propane is burned?

###### FREE Expert Solution
85% (226 ratings)
###### FREE Expert Solution

First, we have to take note that we were given the standard enthalpy of combustion for  C3H8(g)  and this is for 1 mole of C3H8(g).

We are given the mass so we need to convert that first to moles in order to calculate.

85% (226 ratings)
###### Problem Details

The reaction for the combustion of propane is shown below.

C3H8(g) + 5 O2 (g) → 3 CO2 (g)  + 4 H2O (l)    ΔH = - 526.3 kcal/mol

How much heat is  released when 71.7 g of propane is burned?

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Thermochemical Equation concept. You can view video lessons to learn Thermochemical Equation. Or if you need more Thermochemical Equation practice, you can also practice Thermochemical Equation practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofThe reaction for the combustion of propane is shown below. C...as medium difficulty.

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Based on our data, we think this problem is relevant for Professor Greenbowe's class at UO.