Gcse Isa Chemistry Calorimetry
Hypothesis:
I believe that alcoholic compounds with bigger relative formula mass will release more energy in combustion reaction than the less alcoholic hydrocarbons compounds.
Equipment:
Different types of alcohols in spirit burner (CH4, C2H6, C3H8, C4H10, C5H12), Thermometer, water, beaker, scale, measuring cylinder, tripods, clamp, gauze, heat mat, lighter or matches.
Hazard:
Most of alcohol we using are flammable, irritant, toxic and harmful.
1 provide spirit burners which have removable glass caps, this makes it easier and safer to extinguish the flames.
2 Make sure the wick fits tightly in the wick holder and that the wick holder fits tightly in the burner.
3 Fill and label spirit burners or dropper bottles with alcohols in advance of the experiment. Ensure any excess alcohol is wiped off the side of the burners.
5 careful considerations must be given on igniting the alcohols. The spirit burners must be kept upright when lighting. Do not tip onto the side.
6 make sure the alcohols are kept away from any source of heat.
7 don't burn your self by touching any flames or hot water
Method:
1- Fit the beaker inside the tripod, fill the beaker with 100ml of water after measuring it by the cylinder, and take the initial temperature of water by using thermometer,
2- Measure the mass of the first burner spirit (Methanol) and record it, Put the spirit burner on the heat-mat under the beaker and ignite it
3- Keep stirring the water, when the temperature reach 50ºC turn off the flame.
4- Reweigh the burner and workout the difference.
5- Repeat the same steps 3 times and take the average of the alcohol used in burning.
6- Apply the same steps above with the all-different types of alcohol remaining to test (Ethanol, Propanol, Butanol, Pentanol)
7- Finally you need to work out the energy released from each alcohol by applying this calculation q = (specific heat capacity of water 4.2) x mass of water(g) x Δt change in temperature(ºC)
Then
I believe that alcoholic compounds with bigger relative formula mass will release more energy in combustion reaction than the less alcoholic hydrocarbons compounds.
Equipment:
Different types of alcohols in spirit burner (CH4, C2H6, C3H8, C4H10, C5H12), Thermometer, water, beaker, scale, measuring cylinder, tripods, clamp, gauze, heat mat, lighter or matches.
Hazard:
Most of alcohol we using are flammable, irritant, toxic and harmful.
1 provide spirit burners which have removable glass caps, this makes it easier and safer to extinguish the flames.
2 Make sure the wick fits tightly in the wick holder and that the wick holder fits tightly in the burner.
3 Fill and label spirit burners or dropper bottles with alcohols in advance of the experiment. Ensure any excess alcohol is wiped off the side of the burners.
5 careful considerations must be given on igniting the alcohols. The spirit burners must be kept upright when lighting. Do not tip onto the side.
6 make sure the alcohols are kept away from any source of heat.
7 don't burn your self by touching any flames or hot water
Method:
1- Fit the beaker inside the tripod, fill the beaker with 100ml of water after measuring it by the cylinder, and take the initial temperature of water by using thermometer,
2- Measure the mass of the first burner spirit (Methanol) and record it, Put the spirit burner on the heat-mat under the beaker and ignite it
3- Keep stirring the water, when the temperature reach 50ºC turn off the flame.
4- Reweigh the burner and workout the difference.
5- Repeat the same steps 3 times and take the average of the alcohol used in burning.
6- Apply the same steps above with the all-different types of alcohol remaining to test (Ethanol, Propanol, Butanol, Pentanol)
7- Finally you need to work out the energy released from each alcohol by applying this calculation q = (specific heat capacity of water 4.2) x mass of water(g) x Δt change in temperature(ºC)
Then