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

Effect of concentration on Nacl solution

Extracts from this document...


Table of Contents Introduction 3 Basic idea 3 Properties of salt solutions, which influence their electric conductance: 3 Hypothesis 3 Variables: 4 Plan for experiment 4 Materials: 5 Experimental set-up Diagram 5 Steps of the experiment: 6 Safety precautions 6 Solutions preparation 6 Measuring the conductivity / amount of electricity created 6 Making observations: 7 Cleanup: 7 Data and Observations 7 Conclusion 8 Evaluation: 9 Fair testing: 9 Follow up Experiment: 9 References 10 Introduction Basic idea In this assignment we will be focusing on one property, which influences the electrical conductance of an ionic solution. Compounds can be held by a covalent or ionic bond, which depends on the nature of the bonds. In case of ionic compounds (we also call them electrolytes), the force of attraction is present between the ions, which have opposite charge. One of the ions has a positive charge, which is called a cation, and the other has a negative charge, which is called an anion. This attraction is called an ionic bond. Ionic compounds1 form crystals in which anions and cations are held together with force of attraction. ...read more.


2. Take out 4 glass beakers and set them out on the table. Solutions preparation The solution chosen is NaCl. In the five different beakers, there will be different amounts of water and different amount of concentrations of NaCl will be added. The amount of water will decrease with the increase of concentration as to keep the same volume of the solution, which is 100 ml in total for all 5 cases. These 5 solutions are prepared in 5 different beakers. We use a measuring cylinder to measure the amount of water and measuring beaker for NaCl solution. 1. 1st solution -Take 95ml water in a beaker and then add 5ml of NaCl solution. 2. 2nd solution - Take 90 ml water and then add 10ml of NaCl Solution. 3. 3rd solution - Take 85 ml of water and then add 15 ml of NaCl Solution. 4. 4th solution - Take 80ml water and then add 20 ml of NaCl solution. 5. 5th solution - Take 75 ml of water and then add 25 ml of NaCl solution. Measuring the conductivity / amount of electricity created 1.To measure the electric conductance, we need to first create a circuit by using a pair of copper electrodes. ...read more.


In my view we were also extremely organized in the experiment as we knew exactly what we had to do , and any small mistakes which we made we were able to solve them. Fair testing: There should be reasonable difference in the concentrations of the NaCl solutions used for the experiment to get more reliable result. Keep electrodes for sometime in each solution, and as soon as the reading is stable, note it down on your table. Stir the solutions properly before putting electrodes into it to make sure that NaCl has mixed properly with water in each case. Clean and dry electrodes before putting them into different solutions. The amount of the voltage applied should be the same in each case. Follow up Experiment: We are investigating on the various factors that influence the conductance of an ionic solution. In this experiment we concentrated on how the concentration of a solution affected the conductance. So the follow up experiment should be focusing on another influential factor, which in my view should be how temperature influences the conduction of an ionic solution. I also find this a really interesting topic to continue investigation on. This experiment will give us an even better understanding of conductance and electrolytes. ...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. Investigate the rate of reaction of luminol in various factors. The objective was to ...

    130.78 103.72 79.53 60.31 53.25 54.43 46.90 36.78 23.82 20.38 Time 2 (s) 133.17 102.47 82.69 64.97 57.56 54.19 47.85 36.47 22.50 19.97 Time 3 (s) 132.69 103.97 85.31 66.09 55.25 53.69 49.84 33.06 25.56 21.47 Time 4 (s) 131.84 105.87 82.10 65.03 56.72 52.75 47.10 34.00 25.41 20.78 Average time (s)

  2. Electrochemical cells - investigate the effect of the temperature change of the anode electrolyte ...

    cause eye irritation, and it may be irritation to the skin and may cause sensitization reactions. Contact with eyes and skin should be avoided through the use of safety goggles. - When pour the chemical, it needs to be carefully - Regular skin contact with zinc sulphate can cause skin

  1. Investigating the effect of ion concentration in electrolytes on the potential difference in a ...

    However this opposes the rules known already, such as the collision theory. To assess the degree of accuracy of this experiment's results, one can compare it with the Nernst Formula, which is stated as follows: And the variables are as follows: E = electrode potential E� = standard electrode potential

  2. IB chemistry revision notes

    the heat energy required when 1 mole of a substance dissolves in sufficient water that no further energy change occurs, at S.T.P. o is the when 1 mole of a substance is made from its gaseous ions: o is the when 1 mole of gaseous ions are completely hydrated: Entropy

  1. Chemistry extended essay - investigate the effect of 2-bromo-2-methyl propane concentration and temperature of ...

    "Note7: changing the concentration affects the rate of reaction changing the temperature affects the rate constant as well as the rate."

  2. Investigating Solutions. In this experiment the effect of concentration of different solutions will be ...

    These will arrive from the 1M solution by distillation. I will use 3 different with 5 concentrations each, which will act as a repeat as well as another observation - Which of the three is most ionic and therefore conducts the most electricity and why.

  1. Experiment to investigate the effect of concentration of electrolyte on the current of voltaic ...

    After the reaction, the color of zinc stripe changed from silver grey to black. The color of copper stripe became darker brown. When the H2SO4 solution is diluted, the change of the stripes? color becomes slighter. This figure shows the relationship between concentration of electrolyte H2SO4 solution and the electronic current of this Cu-Zn voltaic cell.

  2. IB Chemistry Lab Design - compare the effect of temperature on the concentrations of ...

    Then, the solutions of unknown concentrations are titrated and unitary method is used to calculate their concentrations. The concentration of Vitamin A is calculated using a redox titration. This is done by making a solution of acid dichromate, potassium iodide and starch.

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