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A 200-L home heater tank contains butane gas (C4H10) at 26.0 °C. When some of the...

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Chemistry

A 200-L home heater tank contains butane gas (C4H10) at 26.0 °C.When some of the butane
is removed and burned in excess air, the pressure in the tank dropsfrom 2.34 atm to 1.10 atm.
The energy generated in the combustion is then used to raise thetemperature of 132.5 L of
water from 19.0°C to 71.3 °C.
Useful Information:
ΔH°f (CO2 (g)) = –393.5 kJ/mol ΔH°f (H2O (l)) = –285.8 kJ/molDensity of water = 1 g/mL

→Calculate the enthalpy of formation (ΔH°f) of butane gas.

Answer & Explanation Solved by verified expert
4.2 Ratings (623 Votes)
enthalpy change of water mass of water specific heat of water temperature difference Mass of water density Volume 100013251325 gm1000 enthalpy change 1325141871319 joules2896641000 Joules    See Answer
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