# UCF

What will be the change in enthalpy when 100.0 g of butane, C4H10, is burned in oxygen as shown in the thermochemical equation below?

2 C4H10(l) + 13 O2(g) → 8 CO2(g) + 10 H2O(g) ΔH = −5271 kJ

−2636 kJ
−4534 kJ
−9087 kJ
−1.817 × 104 kJ

1. 👍
2. 👎
3. 👁
1. First find how many moles is 100.0g of butane. Divide 100.0g / 58.14.
So 1.72 mol of butane=-5271J.
The mol coefficient of butane C4H10 is 2.
So multiply the mole of butane by the coefficient to get -1.817*104kj

1. 👍
2. 👎
2. Do.... Your.... Own..... Work.

1. 👍
2. 👎
3. 4534Kj
(5271/2)*1.72

1. 👍
2. 👎

## Similar Questions

1. ### chemistry

The fuel used in many disposable lighters is liquid butane, C4H10. Butane has a molecular weight of 58.1 grams in one mole. How many carbon atoms are in 2.50 g of butane?

2. ### Chem

Butane, C4H10, is widely used as a fuel for disposable lighters. When one mole of butane is burned in oxygen, carbon dioxide and steam are formed and 2658 kJ of heat is evolved. a) Write the thermochemical equation for the

3. ### chemistry

Calculate enthalpy change of reaction for the combustion of gaseous ethanol. C2H5OH + 3O2 >> CO2 + 3H2O. Using standard molar enthalpies of formation. C2H5OH -235.3 ( it's negative sign) CO2 -393.5 H2O -241.8 (1) Calculate the

4. ### Chemistry

Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is: 2C4H10(g)+13O2(g)→8CO2(g)+10H2O(l) At 1.00 atm and 23 ∘C, what is the

1. ### Chemistry

If the standard enthalpy of combustion of octane, C8H18(l) is -5471 kJ/mol, calculate the enthalpy change when 1.00 kg of octane are burned. the molar mass of octane is 114 g/mol

2. ### Chemistry

How many grams of Butane (C4H10) must be burned to release 6375 KJ of heat? Given: Molar mass of C4H10 =

3. ### chemistry

As an ionic solid dissolves in water, the temperature of the solution increases. What best describes the enthalpy and entropy of the solution? A. The enthalpy change is negative, and the entropy decreases. B. The enthalpy change

4. ### Science

Which of the following is an inorganic compound? glucose (C6H12O6) ammonia (NH3) vinegar (C2H4O2) butane (C4H10)

1. ### chemistry

Determine the enthalpy for the partial combustion of methane to carbon monoxide- 2CH4(g) + 3O2(g) = 2CO(g) + 4H2O(l) from change in enthalpy (CH4,g) = -890. kJ mol-1 and change in enthalpy (CO,g) = -283.0 kJ mol-1

2. ### Chemistry

Are my answers correct? C6H14 + 19/2 O2 -> 6 CO2 + 7H2O enthalpy change = -4163 kJ a) if 0.537 mol of carbon dioxide is produced in the reaction represented by the equation above, how much heat is released by the reaction?

3. ### College chemistry

Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 C. A 250 mL sealed flask contains 0.5 g of butane at -22 C. How much butane is present as a liquid? If the butane is warmed to 25 C, how

4. ### Chemistry

The balanced equation for the combustion of butane, C4H10, is 2 C4H10(g) + 13 O2(g) → 8 CO2(g) + 10 H2O(g) Calculate the moles of CO2 produced when 2.62 moles of C4H10 are allowed to react with 13.37 moles of O2.