Hydrochloric Acid

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Concentration of Hydrochloric Acid vs. Reaction Time of Magnesium Prepared by: Mia Clarke
Prepared for: Ms.Hynes
Course: SNC 2D1
Period: 1
Lab Group Number: 4
Due: Tuesday, February 19th, 2013

Purpose:
The purpose of this experiment was to determine the reaction time of magnesium depending on the concentration of hydrochloric acid. Hypothesis:
If the concentration of the reactants in a chemical reaction is increased, the rate of reaction increases as well. Materials:

Magnesium Ribbon
Stop Watch
Graduated Cylinder
Eye Dropper
4 Test Tubes
Test Tube Rack
Hydrochloric Acid
Goggles

Procedure:
1. Graduated cylinder was filled 10mL of a solution of 1.0 hydrochloric acid. 2. 1cm of magnesium ribbon was placed in the test tube.
3. Using a stop watch, the reaction time of the magnesium was measured. The timer was stopped when the magnesium stopped bubbling and disappeared. 4. The measurement was recorded in an observation table. 5. Steps 1-4 were repeated with concentrations of 0.75, 0.5 and 0.25 hydrochloric acid. 6. All trial results were put into a table and averaged. Observations:

Table 1: Reaction Time of Magnesium in Different Concentrations of Hydrochloric Acid Concentration| 1| 2| 3| 4| 5| 6| 7| Average Time|
1.0| 13.20| 17.50| 12.60| 7.13| 8.80| 3.00| 11.87| 10.59| 0.75| 26.70| 14.50| 18.00| 18.63| 14.70| 16.50| 13.75| 61.42| 0.5| 63.38| 77.50| 75.00| 62.55| 68.30| 91.00| 66.00| 68.10| 0.25| 275.96| 251.20| 495.10| 295.58| 294.80| 353.00| 270.00| 319.23|

Discussion:
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