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Chemistry Rates of Reaction

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Submitted By jakerano
Words 1624
Pages 7
Investigating Rates of Reaction between Hydrochloric Acid and Magnesium

Introduction

What is Rate of Reaction?

The reaction rate or rate of reaction for a reactant or product in a particular reaction is intuitively defined as how fast a reaction takes place. For example, the oxidation of iron under the atmosphere is a slow reaction which can take many years, but the combustion of butane in a fire is a reaction that takes place in fractions of a second. In this case how fast Magnesium reacts with Hydrochloric Acid.

The equation for the reaction is

magnesium + hydrochloric acid magnesium chloride + hydrogen Mg(s) + 2HCl(aq) MgCl2(aq) + H2(g)

This is the equation for the reaction which will occur during my experiment

What am I investigating?

I am investigating the rate of reaction when the concentration of hydrochloric acid is increased with magnesium. What I am expecting is when the concentration increases so to will the speed of the reaction backing up the collision theory. This will be timed and put into seconds on how fast I gather an amount of gas and from my results a graph will show this data.

Method

To measure how long it takes to gather the amount of gas I had to carefully measure out 50ml of Hydrochloric Acid in a measuring cylinder. I kept this the same throughout all of the experiments in order for a fair test. I then poured this into the conical flask. After this I folded the 10cm strip of Magnesium and dropped it into the conical flask with the Hydrochloric Acid. I also kept the size of the Magnesium strip the same too. I then placed the bung which was attached to the gas syringe on the conical flask and timed how long it took for 50cm³ of Hydrogen to collect. I then repeated this for each different concentration of acid, from 0.6 to 1.0 molar.

Variables I could…...

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