• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

An Investigation On How Concentration Of Acid Effects The Rate Of Chemical Reactions

Extracts from this document...

Introduction

An Investigation On How Concentration Of Acid Effects The Rate Of Chemical Reactions Prediction I Predict that as the concentration of the acid increases so will the rate of chemical reactions. This is because the concentration will increase, so will the number of acid particles which will increase the number of collisions which will increase the number of successful reactions. For example if there is two beakers with 100cm� of hydrochloric acid in each, but with 1M acid in one and 2M acid in the other. The beaker with 2M acid in will have twice as many acid particles, which will mean twice as many collisions, which means there will be twice as many successful chemical reactions, which will resulting a reaction time twice as fast as in the 1M acid. Preliminary Practical Work To make sure that my results in the final practical were accurate and that it was a fair test. I needed to find out how much gas I would need to collect, the volume of acid to put in the conical flask the mass of the marble chips to use and the surface area of the marble chips used. ...read more.

Middle

2. Set up the equipment as above but do not add the marble chips into the acid. 3. Make sure there is 50cm� of acid in the conical flask to make sure you are accurate use a measuring cylinder. For the first experiment use 1M acid. 4. Start the experiment, Drop a marble chip into the conical flask then as soon as the first bubble comes into the measuring cylinder press start on the stopwatch. 5. Keep a keen eye on how the gas fills up in the test tube as soon as it gets to 20cm� of gas press stop on the stop watch. 6. Record your result. 7. Repeat the experiment 2 more times with 1M acid so the results will be accurate and reliable. Use fresh acid every time. 8. Repeat the experiment 3 times with the 2M and 4M acid. 9. Record Your Results. Fair Testing I made sure this test was fair by making sure all of the measurements were the same and the marble chips were the same mass and weight if I had not done this then it could have changed the whole experiment, e.g. ...read more.

Conclusion

The results showed this except they weren't quite as accurate. They were very close at 2M and 4M but were further apart at 0.5M & 1M. I took readings from a best fit graph and the results were quite close to an ideal set of results except for the 0.5M which was too high and had gone wrong for some reason. Acid 0.5 1 2 4 My Readings 368 166 74 39 Ideal Readings 332 148 68 34 Evaluation Most of my results were accurate except for the 0.5M results which seemed to go wrong. All of the other results were quite close together except for a few rogue results which could have been caused by a rise in temperature on the day of the experiment or maybe human error such as the marble chip not weighing enough or it weighing too much. I think to make this experiment more accurate I would have to do all the experiments more times, I certainly would also have to do the 0.5M & 1M tests again if I wanted this experiment to become more accurate. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Aqueous Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Aqueous Chemistry essays

  1. What effects the rate of a reaction

    Hydrochloric Acid is made up from Hydrogen chloride. Hydrogen chloride is a colourless gas with a pungent, choking smell. It gives steamy fumes in moist air and is very soluble in water, forming Hydrochloric Acid. This is a strong acid. Hydrochloric acid is easily oxidised by such compounds as Manganese Oxide.

  2. Investigating On How Concentration Effects The Rate of Reaction

    by our teacher so we got a thermometer and measured a water and got our average temperature and we kept it constant through out the experiment. Our 3rd trial run was the way the experiment was meant to be done we done it without any mistakes and we were ready for the real thing now.

  1. Investigation to show how the concentration of an acid effects the rate of its ...

    I could use a gas syringe to measure the volume of gas given off, or use water displacement. There are no reasons why I shouldn't use either one, but I have decided to use the gas syringe method for the simple reason of it being easier.

  2. To find the effects of the concentration of hydrochloric acid on the rate of ...

    Place the burette in the plastic container making sure you do not remove your finger from the burette until the bottom of it is in the water. Then set up the apparatus as shown: Step two: Depending upon the concentration of acid or water you use measure the water and the Hydrochloric acid to the desired levels.

  1. I am part of a small chemical company who are attempting to sell Epsom ...

    I measured the volume of hydrogen in the measuring cylinder, although when using the highest concentration of 1.5 mole, the hydrogen was measured before the first 5 seconds. Then I thought I could use a large 250 ml measuring cylinder, however the volume of hydrogen would still fill up the

  2. How the effect of concentration affects the rate of a chemical reaction

    Pour the liquid into a beaker and measure the temperature of the solution using a thermometer. Record the temperature, the temperature should be the same for every test because if the temperature is increased, the ions have more kinetic energy so will move around faster resulting in harder collisions and more frequent collisions with the Magnesium atoms.

  1. Investigation looking At the Speed of Reactions

    be more particles of the reactant to react with, which will increase the time taken for the reaction. If the concentration of an acid is increased, the rate of reaction will increase because the collision rate would be higher and the amount of CO2 would be given out more quickly.

  2. A Investigation into the Rate of Chemical Weathering of Marble

    Others are weak acids and do not completely split up into ions. The effect of varying the acid would show which acids are most destructive on the marble. * Concentration of Acid - The concentration of an acid is usually quoted in 'moles per litre'.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work