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I have to write one lab report between calorimetry, spectroscopy ,chemiluminescence or gases.
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Calorimetry
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Abstract
The specific heat of most metals is always less than 0.50 J/g °C, and the heats of
neutralization of hydrochloric acid and HC2H3O2 with sodium hydroxide were expected to lie
between -57 to -58 kJ/mol H2O and -30 to -38kJ/mol of water produced. Energy is converted
from one form to another, and in an environment where two bodies have a different amount
of energy, there will be a change, and this will be recorded in the form of heat. In this case,
the heat of solution was determined using deionized water to ensure that no foreign ions are
reacting with the unknown salt which is to be established. The heat of neutralization was
performed using two different acids, a stronger and weak acid. HCl which was the stronger
acid produced more energy compared to HC2H3O2 which produced less energy due to the
partial splitting of the ions hence incomplete release of energy. Equally important, the
specific heat capacity of the metal was obtained by applying the principle of an isolated
system where heat lost by the metal is same as to that gained by the water for this case.
Finally, a conclusion was made based on the findings of conducting the experiment.
Introduction
In any given environment, the most common ways in which energy is converted is through
heat and work. Where gases are involved, the work done is zero hence all the energy changes
results to heat. This energy that flows in the surrounding can be determined by calorimetry,
which is basically a heat measurement technique. A calorimeter consists of an insulated
container, thermometer, and a mass of water as well as the system to be studied. The
insulated container helps us to increase the accuracy of the results since there will be little
heat loss in the system through the walls.
In the experiment, all the heat that is either absorbed or given off by a system (qsys) is
exchanged with its surroundings (qsur). This can be expressed mathematically as;
qsys = -qsur ……………………………….1
In this scenario, water is the environment hence the equation can be writ...