REPORT : TEST OF ELECTROLYTE SOLUTION AND NON-ELECTROLYTE SOLUTION

TITLE          : test of electrolyte solution and non-electrolyte solution

DAY, DATE : Monday, 16 february 2017

PURPOSE   : Testing conductivity through the solution

                       Identify electrolyte and non electrolyte solutions

Theoretical basis    :

   Electrolyte solution is a solution that can conduct electricity. While the non electrolyte solution is a solution that can not conduct an electric current.

   Electrical conductivity of the electrolyte solution depends on its type and concentration. Electrical conductivity of the solution is the ability of the solution to conduct electricity.

   A strong electrolyte solution is a solution that can conduct an electric current well. This is because the solute will decompose completely (degree of ionization = 1) into ions so that in the solution contains many ions.

  A weak electrolyte solution is a solution which can conduct a weak electrical current. This is because the solute will partially decompose (degree of ionization? << 1) into ions so that in the solution it contains a little ion.

TOOLS AND MATERIALS :

Tool

1. 2 large batteries

2. 1 lamp

3. Cable + and -

4. Crocodile clamps + and -

5. Paper sandpaper

6. 2 large battery cathode

7. Triplek

Materials

1. Rain water and battery water

2. Sugar water (4 spoons)

3. Salt water (salt box)

4. Soap water (4 scoops of detergent)

5. Vinegar

6. Urea (3 spoons)

7. Alcohol 70%

WORK PROCEDURES :

1) Run the electrolyte test kit.

2) Check if the electrolyte tester works properly or not if the two electrodes are connected, the lamp can be on.

3) Insert one of the solutions to test its electric conductivity strength with 2 cathodes into the beaker halfway up. Notice not to touch.

4) Record and check what happens to the appliance, whether the light is on or off, has a bubble or not.

5) Clean both cathodes / electrodes with sandpaper.

6) Repeat activities 3-5 until all the solutions are addressed.

OBSERVATION RESULT :

DISCUSSION :

1) Rainwater is supposed to be non-electrolyte because, no bubbles are tested and lights are not lit, but in our test solutions the lights are dimmed, this may be because our electrolyte test equipment is dirty or even faulty.

2) The salt water should be brightly lit and has a lot of bubbles and includes a strong electrolyte, but in our experiments the solution is not lit but there are bubbles and are classified as weak electrolytes, this may be due to an error in our electrolyte test kit.

3) Sugar water including weak electrolytes, lights are not lit and have bubbles, but the labs we do show no lights and no bubbles, this may be because our electrolyte test equipment is dirty or even wrong.

4) Vinegar acids should be dimmed and there are bubbles, but the results of our test shows lights are not lit, this may be due to fault / damage of the test equipments.

5) Ethanol (alcohol) should not light on, there is a bubble but our test results lights are not lit and no bubbles. This may be because our tool error or test tool is dirty.

6) Sulfuric acid (battery water) is actually lights are bright and there are bubbles, but the test solution that we do produces that lights turn red. Maybe this is because our test equipment is less clean.

7) The soapy water is basically a brightly lit lamp and there is a bubble, but our lab results show the light is not on. It may be due to an error in our electrolyte test kit.

8) Urea includes weak electrolytes, no lights on but no bubbles.

9) Ammonia supposedly lights are dim and there are bubbles, but our lab results show no lights on and no bubbles. This may happen because our electrolyte test equipment is dirty or even wrong.

10) Hydrochloric acid should be brightly lit and there are bubbles, but the results of our lab show lights are dimmed. This may happen because our electrolyte test equipment is dirty or even wrong.

11) The aquades include non-electrolyte solutions because the lights are not lit and there are no bubbles.

CONCLUSION :

Of the results obtained that the non-electrolyte 1 and 11 and 2,7,8,10 solutions were powerful electrolyte solutions and solutions of 3.4,5.9 weak electrolyte solutions. A strong electrolyte solution produces bright lights and there are bubbles, a weak electrolyte solution only bubbles and also dim lights, and that non-electrolyte solution does not produce bubbles and lights do not light