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Rates Of Reaction - Research Paper

Rates Of Reaction


BACKGROUND INFORMATION
What affects the rate of reaction? 1) The surface area of the magnesium. 2)
The temperature of the reaction. 3) Concentration of the hydrochloric acid. 4)
Presence of a catalyst.

In the experiment we use hydrochloric acid which reacts with the magnesium to
form magnesium chloride. The hydrogen ions give hydrochloric acid its acidic
properties, so that all solutions of hydrogen chloride and water have a sour
taste; corrode active metals, forming metal chlorides and hydrogen; turn litmus
red; neutralise alkalis; and react with salts of weak acids, forming chlorides
and the weak acids.

Magnesium, symbol Mg, silvery white metallic element that is ...

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have to have the activation energy are those particles which are moving,
in the case of magnesium and hydrochloric acid, it is the hydrochloric acid
particles which have to have the activation energy because they are the ones
that are moving and bombarding the magnesium particles to produce magnesium
chloride.

The rate at which all reactions happen are different. An example of a fast
reaction is an explosion, and an example of a slow reaction is rusting. In any
reaction, reactants chemical reactions® products.

We can measure reactions in two ways:

1) Continuous:- Start the experiment and watch it happen; you can use a
computer “logging” system to monitor it. I.e. Watching a colour fade or
increase.

2) Discontinuous:- Do the experiments and take readings/ samples from the
experiment at different times, then analyse the readings/samples to see how many
reactants and products are used up/ produced.

Reaction rate = amount of reactant used up
time taken

If ...

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the average amount of energy possessed by a particle does not
change, there are more particles with each amount of energy;- more particles
with the activation energy.

a) is a major effect which effects the rate, but b) is a minor effect which
effects the rate very slightly.

In this experiment we are not concerned with whether the reaction is
exothermic or endothermic because we are concerned with the activation energy
needed to start and continue the reaction.


PREDICTIONS

I predict that as we increase the temperature the rate of reaction will
increase. If we increase the temperature by 100C the rate of reaction will double.

I predict that if we increase the concentration of ...

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"Rates Of Reaction." Essayworld.com. February 25, 2004. Accessed March 28, 2024. http://www.essayworld.com/essays/Rates-Of-Reaction/3645.
"Rates Of Reaction." Essayworld.com. February 25, 2004. Accessed March 28, 2024. http://www.essayworld.com/essays/Rates-Of-Reaction/3645.
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PAPER DETAILS
Added: 2/25/2004 09:01:38 PM
Category: Science & Nature
Type: Premium Paper
Words: 3069
Pages: 12

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