Reaction between Magnesium and Hydrochloric Acid

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Reaction between Magnesium and Hydrochloric Acid I am going to investigate how the concentration of the acid in the reaction affects the speed at which the gas, hydrogen, is given off. Magnesium + Hydrochloric acid -----> Magnesium chloride + Hydrogen Mg + 2HCl -----> MgCl2 + H2 Prediction I predict that as I increase the concentration of the hydrochloric acid, the speed the gas is given off will also increase. I think this because the reaction is caused by collisions between the acid particles and the metal particles. As I increase the concentration of the acid, more acid particles will be in the same volume of solution. This means that the collisions are more frequent, therefore the rate of reaction is faster and the gas is given off quicker. Preliminary Experiment I am going to use different concentrations of acid in the experiment to find the highest and the lowest molar values of acid I will use in the actual experiment. I will test values between 0.2 and 2 molar acid. To obtain the correct concentrations, I will mix the acid with water. Concentrations of acid(using 50 ml of solution. Concentration HCl H2O 2M 50 5 1.8M 45 10 1.6M 40 15 1.4M 35 20 1.2M 30 25 1.0M 25 30 0.8M 20 35 0.6M 15 40 0.4M 10 45 0.2M 5 50 I am not going to carry out the experiment with 0 molar acid, as this would be reacting the magnesium with water, and magnesium does not react with water, only steam. I will carry out the experiments at room
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