Chemistry Rates Of Reaction
The rate of a reaction is the speed of the reaction. It is not "how much" of a product is made, but instead "how quickly" a reaction takes place. If we consider a reaction
e.g. zinc + hydrochloric acid > zinc chloride + hydrogen
Then there are two possible ways of measuring the rate:
1) measure how quickly one of the products (e.g. the hydrogen) is made
2) measure how quickly one of the reactants (e.g. the zinc) disappears
In this investigation I hope to look at the factors, which affect the rate of reaction between magnesium ribbon and hydrochloric acid.
Some of the factors are: -
The temperature
The concentration of hydrochloric acid
Mg + 2HCL MgCL2 +H2
Fair test
We have to make sure that we use the similar size, amount and roughly the same mass of magnesium, this is because we want to keep the ribbon the same all the way through out the experiment so that it will be a fair test and the results will be related to each other, otherwise the results will be completely different to what we expect and it will be, and it will ruin the experiment. We need to also use the same amount of hydrochloric acid throughout the experiment.
Safety
Before conducting the experiment we must make a few safety precautions, for our own health and safety. Being careful and aware will prevent accidents from happening. Here are a few things we must make sure we do: Wear goggles to protect the eyes. Avoid spilling the acid onto your skin as it is corrosive. If it gets in contact with skin was thoroughly with water and seek medical assistance if necessary.
The apparatus used: -
1. Gas syringe
2. Retort stand
3. Magnesium
4. Stopwatch
5. 0.5, 1, 1.5, 2 and 2.5m of hydrochloric acid
6. Measuring cylinder
7. Thermometer
Rubber pipe
TEST TUBE
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