Combustion of a series of alcohols essay

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Combustion of a series of alcohols essay

The alcohol reacts with the oxygen in the air to form the products water and carbon dioxide: This is because the amount reactant energy is more than the product energy the difference between this is? H, therefore some energy has been given out in the form of heat. The energy is given out when forming the bonds between the new water and carbon dioxide molecules.

This can be shown in an energy level diagram: Enthalpy is defined as the energy of reaction, or the heat energy associated with a chemical change. H Where Qp is the heat flow at constant pressure, Hp is heat energy of products, and Hr is the heat energy of the reactants.

H given off, we must use this energy to heat something, this will be water. This is assuming that all the heat produced by combustion of fuel?

Combustion of a series of alcohols essay

H will equal the amount of heat absorbed by the water q. So I will measure the amount of energy required to do so. This can be worked out by using the formula: I chose to use water as it is safe, easily obtainable, and has a constant, reliable specific heat capacity of 4.

The bonds which are made in a exothermic reaction "are forces of attraction between the atoms or ions in a substance" according to Key science- Chemistry by Eileen Ramsden. These can be of two types: Examples of this are water and carbon dioxide, which has a double covalent bond because it shares two pairs of electrons are shared.

The other type of bonds are ionic, where a metal is involved.

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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:Combustion Of Alcohols Planning This investigation involves burning alcohol in the air.

Key science- Chemistry by Eileen Ramsden says that " an alcohol is a series of organic, The enthalpy change of combustion for the alcohol homologous series. Essay I am going to.

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Send questions or comments to doi. Run of River Power Smaller than large hydroelectric dams and less environmentally damaging, Run of River Hydropower is in the midst of a building boom in B.C. To find out difference in the heat of combustion for different types of alcohols.

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Hypothesis The higher the number of carbon atoms in an alcohol is, the higher the energy for the heat of combustion. Alcohol is a homologous series, a series of organic compounds with similar formula and chemical.

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