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

Investigating the strength of Electrolytic solutions

Extracts from this document...


Jang Investigating the strength of Electrolytic solutions Name: Doug Isaiah Jang Homeroom: DP1 – B Class: Chemistry HL Rohana Sirimanna Date: 10/30/2010 Experiment #1 Experiment Number 1: Strength of Electrolytic Solutions 1.1. Qualitative Data 1.1.1. Physical Properties Picture 1 Picture 1 above shows the picture of solutions I used in this experiment. As one can see, all solutions are colorless, but one solution, calcium hydroxide, which is labeled in Picture 1, is a white, milk-like solution. 1.2 Raw Data 1.2.1. Current in mA following through different electrolytic solutions Table 1 Types of Trial 1 Trial 2 Trial 3 Unit and Multimeter solution Uncertainty Setting 0.5 M HCl (Hydrochloric acid) 45.0 45.0 50.0 ±2.5mA 300mA 0.5 M Ca(OH)â (Calcium hydroxide) 6.00 5.00 5.00 ±0.25mA 30mA 0.5 M NH4Cl (Ammonium chloride) 1.400 1.500 1.100 ±0.025mA 3mA Tap water 1.300 1.250 1.350 ±0.025mA 3mA 0.5 M NHâOH (Ammonium hydroxide) 1.350 1.300 1.350 ±0.025mA 3mA 0.5 M CHâCOâH (Acetic acid) ...read more.


1.350 1.300 1.350 ±0.025mA 3mA 1.333 0.026 Weak base 0.5 M CHâCOâH (Acetic acid) 0.850 1.000 0.900 ±0.025mA 3mA 0.917 0.068 Weak acid Distilled water 0.0500 0.0550 0.0500 ±0.0025mA 0.3mA 0.0517 0.0026 Neutral Table 2 is a processed data of experiment on investigation of the strength of different electrolytic solutions. I included average of the data about strength of each electrolytic solution to make the data table clearer. Furthermore, I also included standard deviation of the data, to summarize the spread of values around the mean. Lastly, I added additional information about these solutions, whether if they are acidic, basic or neutral solutions. 3.1 Conclusion and Evaluation 3.1.1. Conclusion: To conclude, the background information that was given to me by the instructor states that stronger acidic or basic solutions are stronger electrolytes than those of weaker acidic, basic or neutral solutions. Referring to Table 2, which is a processed data of acquired data from this experiment, it provides the information of solutions whether if they are acidic, basic or neutral. ...read more.


First of all, in order to follow the written instruction from the instruction sheets given, I had to wash equipments that made direct contact with the solution everytime I?m changing the solution that I will perform experiment upon with distilled water, but due to the lack of distilled water, I washed them with tap water instead. Second of all, I am not sure if 15 seconds were enough time for the fluctuations of the value to settle, or maybe it was too much time. Last of all, whenever I finish mixing the calcium hydroxide, I have to transfer the solution to the smaller beaker for measurement, but it takes time to do that and the substance might have been settled down within the calcium hydroxide solution. Therefore, there were some errors that prevented me from collecting the best results. Improvements can be made by providing each candidate, like me, with better lab equipments such as more advanced multimeter. Also, enough distilled water so I can wash equipments with it to follow the original instructions given. ...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 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 International Baccalaureate Chemistry essays

  1. pKa. When constant successive portions of Sodium Hydroxide are added to Acetic Acid; how ...

    All experiments will be conducted in the same room within quick succession. The amount of base added to conical flask each time Successive portions of 1 cm3 of NaOH will be added to the conical flask until it reaches the endpoint Human judgment errors The person conducting the experiment must read from the burette in which holds the NaOH.

  2. A Comparison of Strong and Weak Acids and Bases

    dissociated fully as it is a strong base. Thus, the concentration of NaOH(aq) will equals to the concentration of Na+(aq) and OH-(aq). Therefore, the concentration of OH-(aq) is 0.01M. Thus, Table 2.0: The theoretical pH values of H2SO4(aq), HCl(aq), HNO3(aq), and NaOH(aq)

  1. Strong and Weak Acids And Bases

    Uncertainty= 0.75% Discussion Experiment #1- Measurement of pH Values In this experiment we used a pH paper and a pH meter to determine the pH of several acids and bases with different concentrations. Color was used to determine the pH using the pH paper.

  2. Investigating Glue. We expect the result the casein in milk and textured soy ...

    hydrogen bonds with the cellulose in paper and with itself, so it can stick woods together, but it is not water-resistant. Resistance to water can be imparted to casein glue, however, by modifying the simple formula of casein in alkali; these improved casein glues are widely useful in industry.

  1. Chemistry Extended Essay - Viscosity of Xanthan Gum solutions

    However, if they cut the coal into too small pieces the increased surface area will cause a much faster release of heat, and could cause an explosion at the power plant. Optimizing the rate at which the reaction between coal and air occurs is critical to producing the most efficient energy for our planet.

  2. Using Solubility Rules to Indentify Unknown Solutions

    on sides of test tube NR NR Na2SO4 NR Ppt - milky white, foggy, thick consistency, precipitate sink NR NaOH Ppt- very fine precipitate, thin consistency, almost clear colour, floating in solution Ppt - almost clear, floating, cloudy BaCl2 Ppt - milky white, very thick MgSO4 Unknown A NR NR

  1. Biodiesel Investigation - How the concentration of Potassium Hydroxide solution would affect the yield ...

    done before and allow the stirrer to create a reaction between the substances. Keep making qualitative observations and recording changes in temperature from the reaction and record the mass of the final solutions once stirring. 1. Finally, once all the products have been reacted, place them in centrifugal tubes and insert the tubes into the centrifuge.

  2. The chemistry of atmospheric and water pollution.

    This is why there is increased destruction of ozone in spring which also means that the ozone hole is the biggest in spring. How information is obtained Information about ozone concentrations in the stratosphere was obtained by ground-based instruments. This includes UV spectrophotometers which point upwards through the atmosphere, measuring

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