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

G4 planning lab

Extracts from this document...


G4 Project Research Question: To find out the potability of drinking water at a brick kiln, by finding the pH of the water sample, the amount of oxygen that is dissolved in the water sample and by evaluating the chloride content of the water sample. Hypothesis: Brick Kilns are generally harmful for the environment. They have a very bad effect on the nearby areas. The water that is available near to a brick kiln that people drink is generally from a local well. The well being near to the brick kiln contains a lot of impurities and is harmful to the health of the person who consumes that water. So according to me, the amount of dissolved oxygen will be low in content than normal drinking water. The pH will also be wither less than 7 or more than 7 and this indicates that the water is neither acidic nor it is basic, but the water available for drinking should be neutral. The chloride content will be also high because of the impurities present in the water. Background Knowledge: The Brick Kiln where the study was conducted was an intermittent brick kiln. ...read more.


3) Apparatus for testing the dissolved oxygen content of the sample: * Measuring cylinders * Corks. * Burette (for titration); * conical flask; * graduated test tubes; * Manganese salt (Manganese Chloride); * Potassium Iodide + Potassium Hydroxide solution; * Sodium Thiosulphate solution; * Starch indicator solution, Conc. Hydrochloric acid; 4) Apparatus for testing the chloride content of the sample: * 10 cm2 pipette; * Burette; * distilled water in a wash bottle; * 3 C flasks, white tile; * potassium chromate indicator; * 50 cm3 silver nitrate solution. Procedure: 1) DISSOLVED OXYGEN CONTENT: The dissolved oxygen content can be found out using the Winkler's method. This method is from the point of view of chemistry students. The Winkler test is used to determine the concentration of dissolved oxygen in water samples. Dissolved Oxygen, abbreviated D.O., is widely used in water quality studies and routine operation of water reclamation facilities. An excess of Manganese(II) salt, iodide (I-) and hydroxide (OH-) ions are added to a water sample causing a white precipitate of Mn(OH)2 to form. This precipitate is then oxidized by the dissolved oxygen in the water sample into a brown Manganese precipitate. ...read more.


8.7 77 84 3) Brick Kiln puddle (dirty water) at a temperature of 24�C 2.8 34 22 4) Clean drinking water (from mineral water bottle) at a temperature of 24�C 11.4 127 86 * Note: The solubility of oxygen increases with a decrease in temperature. 2) Table 1.2: pH OF WATER SAMPLE: AREA OF INVESTIGATION for Water Sample pH (units) Quality Index 1) Brick Kiln tube well 8.2 77 2) Brick Kiln puddle (dirty water) 9 49 3) Clean drinking water (from mineral water bottle) 7.4 93 * NOTE: Rapids growing algae remove carbon dioxide from the water during photosynthesis, which can result in a significant increase in pH levels. 3) Table 1.3: CHLORIDE CONTENT OF WATER SAMPLE: AREA OF INVESTIGATION for Water Sample CHLORIDE CONTENT 1) Brick Kiln tube well 5.6 2) Brick Kiln puddle (dirty water) 6 3) Clean drinking water (from mineral water bottle) 4 Conclusion: According to the readings I have got by conducting the experiment, I think that the water in the well in contaminated and is not fit for drinking seeing the observations and result and it can be said that by consuming this water the people at the brick kiln can be affected by diseases. ?? ?? ?? ?? VIKAS DHAKA 2279-028 Page 1 of 8 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology 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 International Baccalaureate Biology essays

  1. Vitamin C Lab

    Furthermore, another reason why the concentration is particularly low at 10�C is perhaps because we had left the freshly squeezed lemon juice totally exposed to air and light, and by the time we tested the concentration at 10�C, it was nearly an hour after the juice was squeezed out.

  2. Bio lab - Oxygen Consumption in germinating and non-germinating seeds

    0.87 10 0.91 0.76 0.87 15 0.90 0.69 0.86 20 0.88 0.59 0.86 25 0.79 0.39 0.83 30 0.77 0.35 0.81 Raw Data Table 6: The volume of the water level at the reading of the 1.0 ml pipettes of the respirometres for 30 minutes in room temperature.

  1. Biology Industrial Melanism of Peppered Moth Lab

    This ability made them less likely to be seen and captured by predators. The light-coloured moths that are less able to adapt got captured by predators and the population started to decrease. However, the better adapted melanic moths reproduced and passed on its characteristics due to meiosis and changed the gene frequency.

  2. Testing the dissolved oxygen levels in water samples.

    The equation for photosynthesis is as follows: 12H2O + 6CO2 � C6H12O6 + 6O2 + 6H2O There are two ways to measure primary production, the oxygen method and the carbon dioxide method. The oxygen method uses a dark and light bottle to compare the amount of oxygen produced in photosynthesis and used in respiration.

  1. A Local Ecosystem, Patterns in Nature,Life on Earth,The Australian Biota ...

    There are problems in inferring (assuming) that all useful features have developed as adaptations to a particular environment as it may have always obtained this feature or gained it for a different reason for example the iis is a wetlands bird that has become common in cities eating out of city drains and garbage bins.

  2. Free essay

    Effect of Nitrate Concentration on Plant Growth

    27(8 grey) 23 (20 grey) 11(6 grey) 19(6 grey) Day 8 31 (4 grey) 29 (28 grey) / 42 (6 grey) 30(19 grey) 21(6 grey) 35(8 grey) 23 (21 grey) 12(7 grey) 20(6 grey) Day 9 38 (6 grey) 29 (28 grey) / 53 (9 grey) 30(25 grey) 22(8 grey)

  1. Environment science lab soil planning lab

    Materials required for testing Ph:- 1) 3 Long test tube (145mm) and 3 bung's 2) Test tube rack. 3) Barium sulphate. 4) BDH universal indicator solution and pH meter 5) Spatula. 6) Distilled water 7) 30cm3 pipette. 8) Measuring tape 9)

  2. What is the effect of pH levels on the net production, given by the ...

    that support photosynthetic reactions and respiration, which are pivotal processes in determining net production. In other words, keeping pH of solution of Chlorella pyrenoidosa within the optimal pH of 8 will allow the phytoplankton to maintain homeostasis, increasing net production (relative to other experimental groups).

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