Determining the effect of the concentration of HCL over the rate of the reaction between Magnesium and Hydrochloric acid
Determining the effect of the concentration of HCL over the rate of the reaction between Magnesium and Hydrochloric acid
Formula: Mg(s) + 2HCl (aq) → MgCl2 (aq) + H2 (g)
- Aim: In this practical, we will find the relationship between the rate of reaction between Mg ribbons and Hydrochloric acid and the concentration of the acid. We want to know how this factor affects the rate of this chemical reaction.
- Research Question: ¿How does the concentration of HCL affect the rate of reaction between Mg and HCL?
- Hypothesis: Based on my knowledge on collision theory and kinetics, I can predict that the higher the concentration of the acid, more successful collisions will occur, increasing the rate of reaction.
- Variables:
- Apparatus Requirements:
- Magnesium in ribbons
- HCl (0.2mol and 1.0mol)
- Chronometer
- Conical Flask
- Cork
- Measuring Cylinders
- Clamp and stand
- Gas syringe
- Ruler
- Sandpaper
NOTE: Set the apparatus in the following way:
- Method:
- Set the apparatus as shown above
- Measure 10 ml of HCl 0.2mol in a measuring cylinder
- Pour the HCl in the conical flask.
- Cut the Mg ribbon into three different lengths of 1, 2 and 3cm. We will use different lengths of Mg to make more accurate the experiment as we will have the same three lengths for both of the concentrations used.
- Clean the Mg ribbon with the sandpaper to remove any oxides
- Prepare the chronometer, put the Mg ribbon inside the conical flask and put the cork. Start the chronometer
- After the reaction has ended, record the volume of gas produced and the time taken to produce it.
- Repeat the steps for the three lengths of Mg and the 2 concentrations of the acid
- Record any suitable data and plot it.