To investigate the rate of reaction I have decided to use this experiment. I am going to use Marble Chips and Hydrochloric Acid.

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Chemistry AT1 – Rates of Reaction

To investigate the rate of reaction I have decided to use this experiment. I am going to use Marble Chips and Hydrochloric Acid. I will change the concentration of the hydrochloric acid each time, and I will measure how quickly the upturned measuring tube will be filled up with carbon dioxide.

Prediction

I think that the higher the concentration of hydrochloric acid the faster the carbon dioxide will be given off. I think this because the higher the concentration of acid molecules the more particles available to react. Also the higher the concentration of acid particles the more chance of a particle having enough activation energy. The more particles available at any one time with enough activation energy means that in a given time more of the product is produced, or it takes a less amount of time to produce a certain amount of product, in this case Carbon Dioxide. The activation energy is the amount of energy needed to make the two particles react.

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I will take into consideration that the speed with which I put in the marble chips, place in the bung and press the stop watch may well affect how well the experiment works. Although these factors will affect the end result so long as they are kept constant throughout then it should not matter too much.

I also did a trial experiment beforehand to give an idea as to what to do in our investigation because it allowed me to know what amount and size of marble chips to use in the proper experiment. It was also ...

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