Determining the effect of the concentration of HCL over the rate of the reaction between Magnesium and Hydrochloric acid

Authors Avatar

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.
Join now!

NOTE: Be careful with the gas syringe as it can easily get stuck and affect you results.

  • DATA COLLECTION:

Table 1.1 to show the time that each Magnesium Ribbon took to react completely with the HCL in the two different concentrations.

Table 1.2 to show the amount of Hydrogen gas produced by the reaction between Mg ribbons in the three lengths and HCL in the two different concentrations.

  • DATA PROCESSING AND CALCULATIONS:

  1.  We will first calculate the averages of Time and Amount of Gas for each of the two ...

This is a preview of the whole essay