For the experiment of calorimeter, (the experimental methods as below), there are some differences between the standard values and the experimental values for the heat of combustion of the four alcohols: ethanol, propan-1-ol, butan-1-ol, and hexan-1-ol

Subject:ChemistryPrice:9.82 Bought3

Share With

For the experiment of calorimeter, (the experimental methods as below), there are some differences between the standard values and the experimental values for the heat of combustion of the four alcohols: ethanol, propan-1-ol, butan-1-ol, and hexan-1-ol.

 

Explain how these differences between the standard values and experimental values occur? And why these errors affect the data collected and calculated?

 

 

 

Experimental Procedure Method 

 

1. Measure 100cm3 of water using the measuring cylinder. Pour this water into the steel can and record its temperature. 2. Take one of the spirit burners and record • the name of the fuel • the mass of the whole burner (including the lid and fuel inside). 3. Clamp the steel can at a suitable height, so that the spirit burner will fit comfortably under it. 4. Light the wick of the spirit burner, and put it under the steel can. 5. Stir the water gently with the thermometer, and watch the temperature. 6. When it has increased by 20°C, put the lid on the spirit burner to put the flame out. 7. Record the new mass of the whole burner (including the lid and fuel inside) and any observations. 8. Using fresh water each time, repeat the experiment for all the other spirit burners containing the other alcohols.