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Concnetraion Hydorchloric Acid

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Introduction

How does changing the Concentration of Hydrochloric Acid Affect the Rate of Reaction between Hydrochloric Acid and Magnesium? Dependent Variable Volume of Hydrogen Produced - the volume of hydrogen produced in cm3 will be affected by the independent variable which in this case is the concentration of the hydrochloric acid. There is no way in which the volume of hydrogen produced can be controlled however make sure none is lost by making sure that the gas syringe is correctly connected. Measurements will be taken every 30 seconds for the volume of hydrogen produced for 5 minutes. Independent Variable Concentration - the variable which will be controlled is the concentration of the hydrochloric acid. The concentrations which will be used are 2M, 1.8M, 1.6M, 1.4M, 1.2M, 1.0M, 0.8M, 0.6M, 0.4M and 0.2M. The concentrations will be changed by using different measurements of hydrochloric acid and water. ...read more.

Middle

This will ensure that the test will be fair As I am using the same length and same coil of magnesium the mass should always be kept constant. Mass - The mass of the magnesium will be kept constant throughout the experiment as the length and coil of magnesium is always kept constant. Other ways in which the experiment will be controlled is by using the same conical flask and gas syringe. I will also be using the same measuring equipment to measure out the hydrochloric acid and the water for all the concentration while also using the same ruler Method 1. Measure out the 50 cm3 of the 2 mol dm-3 hydrochloric acid using one of the measuring cylinders. Once measured out pour the 50 cm3 hydrochloric acid into the 100 cm3 conical flask. 2. Set up the apparatus as shown in the diagram in the page before, ensuring that the gas syringe is secure so that no hydrogen gets lost. ...read more.

Conclusion

To find out how the rate of reaction progresses throughout the experiment work out the rate of reaction for the volume of hydrogen produced every 30 seconds for 5 minutes . Safety When handling the hydrochloric acid make sure that care is taken. Avoid contact with the eyes or skin as it can cause serious permanent damage. If contact is made with the eye, immediately flush the eye with water for ten minutes then seek medical help, while if contact is made with the skin, wash area with plenty of water and remove any contaminated clothing. If swallowed drink plenty of water and seek medical help. Always wear safety glasses when handling hydrochloric acid. Apparatus 2M Hydrochloric Acid Water Magnesium Ribbon Clamp Stand Delivery Tube + Single holed bung Gas Syringe 100cm3 Conical Flask 2x 100cm3 Measuring Cylinder Ruler Stop Watch ...read more.

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This is a well written partial report. It is limited to two stars as it is incomplete. There specific strengths and improvements suggested throughout. There is also additional guidance provided for the content that is missing.

Marked by teacher Cornelia Bruce 18/04/2013

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