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

Investigate how varying certain key factors will affect the time taken for marble to react in Hydrochloric Acid.

Extracts from this document...


GCSE Coursework Aim Our aim is to investigate how varying certain key factors will affect the time taken for marble to react in Hydrochloric Acid. Key Factors ?Temperature of Acid ?The Catalyst ?The Concentration of the Acid ?The Surface Area of The Marble I am going to investigate the difference in the time taken for marble to react in Hydrochloric Acid depending on the temperature of the acid, and attempt to discover any patterns. 2HCl + CaCO3 --> H2O + CO2+ CaCl2 This will be a good reaction to test as one of the products is Carbon Dioxide so we can measure the time taken for the gas to be produced, using a relatively simple experiment. ...read more.


We decided to test the reactivity at 40�C, 50�C, 60�C, 70�C, 80�C, 90�C and 100�C. We filled the burette up to 50cm3 and then turned it upside down with our hand over the end. We filled the basin half full with tap water and placed the burette upside down in the water, and then removed our hand. We used the G-Clamp to hold the burette in position just off the bottom of the basin. When the Acid was heated to the desired temperature we took it of the tripod and place the end of the sidearm into the bottom of the burette. We dropped the marble into the conical flask containing the acid and quickly placed the bung on the top. ...read more.


This agrees with my prediction, as the time taken to empty the burette of water decreased with higher temperatures. Evaluation I feel we could have improved our results by doing lower temperature acid, to produce mo�e accurate results. This would help as we could test the time taken to produce 50cc of Carbon Dioxide at room temperature, and even at much colder temperatures. We also could have done intermediate temperatures between our existing temperatures, such as doing a test every 5�C, e.g.20�C, 25�C, 30�C, 35�C and so on until 100�C. If we had been able to keep the acid at the acquired temperature this would have made our results even more accurate, as the acid probably dropped greatly in temperature as the reaction was taking place. ...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. The action of amylase and pectinase in varying amounts when clarifying cloudy apple juice.

    Amylase Pectinase Apple Juice 0.9 mm� 0.1 mm� 10 cm� 0.8 mm� 0.2 mm� 10 cm� 0.7 mm� 0.3 mm� 10 cm� 0.6 mm� 0.4 mm� 10 cm� 0.5 mm� 0.5 mm� 10 cm� 0.4 mm� 0.6 mm� 10 cm� 0.3 mm� 0.7 mm� 10 cm� 0.2 mm� 0.8 mm�

  2. Investigate the factors, which affects how quickly Calcium carbonate reacts with hydrochloric acid.

    The more concentrated the acid the more quickly the reaction will occur. Fig 3 Variables In this experiment I am going to investigate three variables. In the first experiment I will be investigating surface area .I will be keeping the amount of acid and amount of calcium carbonate the same,

  1. To investigate the factors that affect the amount energy produced in neutralisation reactions.

    If desired, it is also possible to vary the strength of the acid and/or base. By this, it is meant that a weak acid could be used, like Ethanoic acid, with a weak, and then strong alkali; the results could be compared to that which occurs when a strong acid is used with either alkali.

  2. What factors affect the temperature change of water when heated by an electric heater?

    only a few �C change in the temperature, which would not have affected the results and it would be difficult to see any kind of relationship, due to the greater mass of water in the cup. I then decided to make 2V the minimum voltage because if the voltage was

  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 the factors affecting neutralisation.

    This is because of Le Chatelier's Principle - if the concentration of a substance in a reversible reaction at equilibrium changes, the system alters to counteract the change and set up a new equilibrium. CH3CO2H CH3CO2 + H This is a system in equilibrium - the forward and reverse reactions happen at the same rate.

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