Calculating the Enthalpy Change of Combustion of Five Different Alcohol Fuels Including Methanol, Ethanol, Propanol, Butanol and Pentanol by Heating and Measuring the Change in Temperature of Water using a Temperature Probe
Introduction: The enthalpy change of combustion can be calculated using the formula △H = MC△T, where △H is the enthalpy change in kJ mol-1, M is the mass in kilograms, C is the specific heat capacity in kilojoules, and △T is the temperature change in kelvins. In this experiment, I will be investigating the enthalpy change of combustion after heating five different alcohol fuels for five minutes, including methanol, ethanol, propanol, butanol and pentanol, by measuring the heat energy transferred to the water using a …show more content…
Combustion of Methanol:
2CH3OH (aq) + 3O2 (g) -> 2CO2 (g) + 4H2O (l) + (Heat Energy)
Combustion of Ethanol:
2C2H5OH (aq) + 6O2 (g) -> 4CO2 (g) + 6H2O (l) + (Heat Energy)
Combustion of Propanol:
2C3H7OH (aq) + 9O2 (g) -> 6CO2 (g) + 8H2O (l) + (Heat Energy)
Combustion of …show more content…
If you have long hair, make sure to tie it back.
Be careful when lighting the spirit lamp and when extinguishing the flame.
Make sure to use tongs to handle the apparatus after being heated.
Method:
Measure and record the mass of the spirit lamp containing methanol.
Place the spirit lamp underneath a tripod, with a metal gauze over the tripod.
Place a 250 cm^3 beaker over an electronic balance and tare the electronic balance so that it reads 0.
Using a 250 cm^3 measuring cylinder, measure out 200 cm^3 of water and transfer it to the beaker. Record the mass of the water.
Place the beaker of water on top of the metal gauze, so that it is above the spirit lamp.
Using a metal stand and a clamp, hold a temperature probe into place inside the beaker, making sure that the temperature probe does not come into contact with the beaker.
Record the temperature of the water every thirty seconds for three minutes using a stopwatch to make sure the temperature of water is
Introduction: The enthalpy change of combustion can be calculated using the formula △H = MC△T, where △H is the enthalpy change in kJ mol-1, M is the mass in kilograms, C is the specific heat capacity in kilojoules, and △T is the temperature change in kelvins. In this experiment, I will be investigating the enthalpy change of combustion after heating five different alcohol fuels for five minutes, including methanol, ethanol, propanol, butanol and pentanol, by measuring the heat energy transferred to the water using a …show more content…
Combustion of Methanol:
2CH3OH (aq) + 3O2 (g) -> 2CO2 (g) + 4H2O (l) + (Heat Energy)
Combustion of Ethanol:
2C2H5OH (aq) + 6O2 (g) -> 4CO2 (g) + 6H2O (l) + (Heat Energy)
Combustion of Propanol:
2C3H7OH (aq) + 9O2 (g) -> 6CO2 (g) + 8H2O (l) + (Heat Energy)
Combustion of …show more content…
If you have long hair, make sure to tie it back.
Be careful when lighting the spirit lamp and when extinguishing the flame.
Make sure to use tongs to handle the apparatus after being heated.
Method:
Measure and record the mass of the spirit lamp containing methanol.
Place the spirit lamp underneath a tripod, with a metal gauze over the tripod.
Place a 250 cm^3 beaker over an electronic balance and tare the electronic balance so that it reads 0.
Using a 250 cm^3 measuring cylinder, measure out 200 cm^3 of water and transfer it to the beaker. Record the mass of the water.
Place the beaker of water on top of the metal gauze, so that it is above the spirit lamp.
Using a metal stand and a clamp, hold a temperature probe into place inside the beaker, making sure that the temperature probe does not come into contact with the beaker.
Record the temperature of the water every thirty seconds for three minutes using a stopwatch to make sure the temperature of water is