- Join over 1.2 million students every month
- Accelerate your learning by 29%
- Unlimited access for just £4.99 per month
The aim of this experiment is to calculate the enthalpy change in various alcohols.
The first 200 words of this essay...
CHEMISTRY 3: Energy, rate and extent of reaction
AIM
The aim of this experiment is to calculate the enthalpy change in various alcohols.
HYPOTHESIS
Energy is produced when a fuel is burned. The fuel can be used to heat water in a calorie meter. In order to calculate the energy produced by the fuel, the mass, specific heat capacity and temperature of the water need to be known. The enthalpy change can then be calculated using the following formula:
?H=mc?t
Where ?H=Enthalpy change, m=mass, c=specific heat capacity, and ?t=change in temperature.
Specific heat capacity is the energy needed by one gram of a substance to raise its temperature by 1°K. The specific heat capacity of water is a standard of 4.2J/gk.
In this experiment, the fuel to be used is alcohol. Seven different alcohols will be used. The general formula of an alcohol is CnH2n+1OH. The individual formulas are:
methanol CH3OH
ethanol C2H5OH
propanol C3H7OH
butanol C4H9OH
pentanol C5H11OH
hexanol C6H13OH
octanol C8H17OH
The reaction that is involved in burning alcohols is exothermic, as heat energy is lost. The energy is given off when
Found what you're looking for?
- Start learning 29% faster today
- Over 150,000 essays available
- Just £4.99 a month
Not the one? We have 100's more
Organic Chemistry (view all)
- Fuel cell technology.
- To investigate how the heat of combustion of alcohols varies...
- Experiment to investigate the heat of combustion of alcohols...
- Burning Fuels - Fuels are substances that release energy whe...
- Enthalpy Change - Alcohols
