• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
Page
  1. 1
    1
  2. 2
    2
  3. 3
    3
  4. 4
    4
  5. 5
    5
  6. 6
    6
  7. 7
    7
  8. 8
    8
  9. 9
    9
  10. 10
    10
  11. 11
    11
  12. 12
    12
  13. 13
    13

Investigate the effect of concentration in the rate of a reaction.

Extracts from this document...

Introduction

BY DARREN HALIL 10 MAL Preliminary Work. Aim- Our aim is to investigate the effect of concentration in the rate of a reaction. Method- Below is a step-by-step guide to exactly what we did to do the experiment. The first thing we did or we do in any experiment involving acid is put on safety goggles so we do not ruin our eyes. > We then went and gathered up the equipment to complete the experiment. The list is below: > A Balance (scales) > A gas syringe (100 cm cubed) > 3m Hydrochloric acid > A conical flask. > A clamp stand > A Beaker > A Measuring cylinder > Three grams worth of marble chips > Stopwatch * We measured twenty millilitres of Hydrochloric acid in the measuring cylinder we then poured the Hydrochloric acid into the conical flask. * We then got a square piece of paper and then placed it on the balance. We pressed the button with the T symbol on it; this then turned the units to zero grams. * We then got the tub of marble chips and measured out three grams of marble chips. * We then put the marble chips into the hydrochloric acid that we poured into the conical flask, and then we quickly put the cork ,that was on the end of the gas syringe, into the top of the conical flask. ...read more.

Middle

This reaction is reacting slowly. The catalyst is then added, this makes the reaction increase in speed; however, the catalyst is not physically or chemically changed. Method > The first thing we do in any experiment involving acid is to put on a pair of safety goggles. > We then went and collected the equipment from the equipment trolley. The equipment is listed below...... > Clampstand > Measuring Cylinder (100 ml) > Gas Syringe (100cm cubed) > Hydrochloric acid (three molar) (20 ml) > A balance (scales) > Conical flask > Beaker > Stopwatch > Two grams of marble chips * We set up the clampstand by standing it up right. We then opened up the arm on the clampstand and placed the gas syringe into the open arm of the clampstand and twisted the key on the side of the clampstand arm to close it. We made sure that the units were visible to us so that we could take the readings during the experiment. * Once the gas syringe was set up , we got the marble chips and went over to the balance. We got a rectangular piece of paper and placed it onto the balance. We then pressed the button with the T sign on it. This then put the units to zero. ...read more.

Conclusion

The results proved that we did each part correctly. The concentrations of the molars we experimented on, we had to make ourselves. To measure the amount of concentrated acid (ml). We knelt down to eye level to measure, because if we stood up and read it , we would be looking at it from a different angle ; therefore, we would have been getting a different reading. The results were abnormal, already said earlier, some of the lower concentrated acids reacted faster. This may have been because of change in room temperature, or most probably the surface area of the marble chips. We could have made two grams of marble chips from a lot of small ones or a couple of big ones. There were a lot of thing we could have done to improve the experiment. For example we could have controlled the room temperature by turning of the heating. We would have would have also restricted the amount of people in the class. The reason would be because it would reduce the overall body temperature. We would also have used a bigger gas syringe. We were only restricted to syringes that could hold one hundred cubic cm's worth of carbon dioxide. We would also have changed the amount of concentrations we did. We would have done a 0.5 molar test aswell. We also would have probably increased the amount of marble chips to three grams. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Physical 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 AS and A Level Physical Chemistry essays

  1. Marked by a teacher

    Finding out how much acid there is in a solution

    Here is a diagram showing the colours which show up when neutralization occurs, using these indicators. Note: methyl orange will be used for this experiment: Methyl Orange: Methyl Orange is an acidic solution which turns red in acidic solution. It absorbs blue- green light to do this.

  2. Investigating the Rate of the Reaction between Bromide and Bromate Ions in Acid Solution

    1.5 - Rate Determining Step The majority of chemical reactions do not take place in a single step. The separate steps which form the reaction are known as the reaction mechanism. The reaction mechanism can only be hypothesised from results of experiments - there is no way to "prove" that it is how the reaction takes place.

  1. Investigating how concentration affects rate of reaction

    For example, if the temperature is increased from 293K to 303K, a change from 20 to 30�C, the factor increase can be calculated as follows: 300 310 = 1.016 This is an increase of 1.6% for a temperature change of +10�C.

  2. Investigating the rate of reaction between peroxydisulphate(VI) ions and iodide ions

    This will create more accurate and consistent results. Place this into the water bath. See Figure 3.1 below. Table 3.3. A table to show the different concentrations that make up each mixture Mixture Test Tube Boiling tube Volume (cm3) of KI(aq)

  1. Investigating the rate of reaction between marble chips (calcium carbonate) and hydrochloric acid.

    Therefore, any results I have will be accurate to that that number. I will carry out this experiment later on in the plan. I will also make sure that when I am measuring the volume of the acid in the test tube, I take the measurement of the lower meniscus.

  2. Chemistry Coursework: Investigating the effect of Concentration on the Rate of Reaction

    My main prediction is that the 2.5M acid will react the quickest, then the 2M acid, then the 1.5M acid, and finally the 1M acid. Plan Labelled Diagram Apparatus * Bowl (filled with water) * 2 Measuring Cylinders * Stopwatch * Boling tube (with a rubber tube attached to it)

  1. Describe the construction, operation and application of distillation equipment used in industry

    for the main types of column packing listed. Give typical examples of their use. a Raschig rings Ceramic Raschig Rings. Raschig rings are a means of reducing pressure in a column. They are a form of random packing used in distillation columns.

  2. Neutralization investigation

    The litmus paper is a small strip of blue paper that I can dab into the acid, and it should turn red. I will use sensible amounts of acids and alkalis. I will use the same volume and type of indicator, as this is something that should be kept the same so my method remains consistent.

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