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Topic: Science
Number of pages / Number of words: 9 / 2310
Essay's paper body

The other type of bonds are

ionic, where a metal is involved. This is where electrons are

transferred from one ion to another, so there is an electrostatic

force between the ions.

The variables that must be controlled are:

* Mass of water

* Amount of wick on burner

* Type of alcohol

* Height of can above flame

* Type of can

* Time of burning

The alcohols used in this experiment will be from methanol, to

hexanol, their formulas and predicted enthalpy changes are:

Substance Formula - Predicted enthalpy change (KJ/mole)

Alcohol CnH2n+1OH

Methanol CH3OH -730

Ethanol C2H5OH -1370

Propanol C3H7OH -2010

Butanol C4H9OH -2670

Pentanol C5H11OH -3320

Hexanol C6H13OH 3980 N...


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The precicted enthalpy changes come form the

book of data by Nufield science. As the table shows, each alcohol

reaction increases each time by :

CH2 +11/2O 2 ? CO2 + H2O.

Investigating The Combustion Of Alcohols - Method

I did some preliminary results, the results of which are shown in the

table below:

Mass water (g) Initial temperature (C) Final temperature (C)

Temperature rise (C)

50 19 42 23

100 20 38 18

150 20 31 11

This experiment was done to see which mass of water would be best...


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