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

To investigate how the concentration of hydrochloric acid affect the speed of reaction with marble chips.

Extracts from this document...

Introduction

Marble chips Experiment. Pilot Aim: To investigate how the concentration of hydrochloric acid affect the speed of reaction with marble chips. Prediction: I predict that the more hydrochloric acid there is the faster the chemical reaction. I also predict that the more dilute the acid is (the more water there is with the acid) the slower the chemical reaction. Hypothesis: I predicted what I did because the more concentrated the hydrochloric acid is the more energy there will be and so therefore the more collisions there will be. More collisions occur when there are more acid particles. It is the acid particles that create the collisions and it is the collisions that lead to the reaction. In a dilute acid or a mixture of more water than acid, there will be a slower reaction because there are less acid particles. ...read more.

Middle

In this case I will time how long it takes for the water to reach the '50 ml' mark. If I keep the same stop point at '50 ml', I will be able to recognise the affects on the speed of reaction with the different concentrations. Fair Test: I will keep the same overall amounts of mixture of hydrochloric acid and water in the conical flask. The amount of mixture will be 30 ml. I will use the same stop point which shall be at 50 ml. I will keep the same mass of marble chips, which will be 10g and the surface area of the marble chips. I will carefully wash out the equipment and apparatus to prevent contamination of the apparatus and keep the temperature in which I will be experimenting in at room temperature, around 25 degrees Celsius. Apparatus: Conical Flasks. Measuring cylinders. A large bowl. *Bee hive.* Tap water. Bung with tube. ...read more.

Conclusion

7. Add the 10g of marble chips. 8. Then place the bung on top of the conical flask to stop gas escaping. 9. Start the clock immediately! 10. When the water in the measuring cylinder falls to the 50 ml mark, stop the clock. 11. Record the time in a results table similar t the one below. 12. now repeat the steps for 25ml HCl:5ml water 13. Repeat for 20ml HCl:10ml water 14. Repeat for 15ml HCl:15ml water 15. And repeat for 10ml HCl:20ml water 16. Repeat all the above steps twice more so by the end of this experiment you should have three results for all 5 measurements. Results Table: Hydrochloric acid molarity Amount of acid (ml) (3m) Amount of water (ml) Stock (ml) Mass Of Marble Chips (g) Stop point on cylinder Time taken to reach the stop point (s) 30 0 30 10 50 25 5 30 10 50 20 10 30 10 50 15 15 30 10 50 10 20 30 10 50 Nick Blount ...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. Investigating the effect of concentration on the rateof reaction between marble chips and Hydrochloric ...

    If the acid were less reactive the reaction would take place slower, therefore less carbon dioxide would be produced overall, and at a slower rate. Proving the Prediction On the whole, my prediction was more or less right. As the acid got weaker, the amount of gas produced, decreased, apart from at the 70% concentration, where it instantaneously increased.

  2. Investigate how the concentration of 10 ml of hydrochloric acid affects the rate of ...

    , the surface area, is the main problem area. The surface area of the chips will have a big effect because for example you may have one large chip weighing 3g and many tiny chips collectively weighing 3g. The larger the surface area of the 3g of chips, the more area the hydrochloric acid has to react on.

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

    When measuring the volume of gas production I measured this to one millimetre. When reading the water level in the burette I measured at the bottom of the meniscus. I have used sensible and well-spaced concentrations for my acid and water. Conclusion: The results for 50ml acid and 0ml water.

  2. An investigation into how changing one variable influences the rate of reaction between marble ...

    This is done by washing the chips in hydrochloric acid and then rinsing them in water to stop them reacting. I then kept my cleaned chips separate from the others that were not cleaned to avoid any dust or power being transferred onto the clean chips.

  1. To investigate the effects of the concentration of Hydrochloric acid on the rate of ...

    Fair Test - To keep the experiment fair, we will keep the following things the same in each experiment: * Mass of marble chips - so that the reactivity is similar * We will conduct two experiments for each concentration, so that we can find the average of the two

  2. Does changing the temperature of the acid affect the speed of reaction?

    After that I will put my data in a table and on a lined graph. I will do the same investigation again but this time the temperatures of the acid will be at room temperature and another one, which is the same but this time the temperature of the acid

  1. The Erosion of Marble

    carbon dioxide was given off in the first minute every 20.0 seconds then after that every 30.0 seconds. Record in the table shown below. (Remember to put the measuring cylinder back on the scales after you have added the acid).

  2. to investigate how the concentration affects the rate of the reaction

    EQUIPMENT For my experiment, the following equipment will be used; 1. a gas syringe that has 0-100 mile-litres (ml) calibrations 2. a clamp to hold the gas syringe 3.

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