To test the electrical conductivity of a solution
Tools and Materials :
1. Well water
2. Alcohol / Ethanol
3. Orange water / Citrate acid
4. Air belimbing / Vitamin C Ascorbic acid
5. Detergen solution / Phosphate acid
6. NaCl solution
7. Sugar solution
8. Battery
9. Wire
10. Dioda LED / Small lamp
11. Small box
12. Zinc
13. Lakban
14. Scissors
15. Cutter
Steps of work :
1. Prepare those tools and materials.
2. Arrange the battery, wire, small lamp, zinc, and small box so that it can be used as electrical conduvtivity tester. (Look at the picture below !)
3. Test the solution which has been prepared by putting the end of wire into the solution.
4. Observe what will happened with the end of wire and the lamp.
5. Note your observation results, make the analysis and conclude the observation result.
Data Analysis :
1. Well water - None- lamp is Off- There’s a bubble- Weak electrolyt
2. Alcohol -C2H5OH - lamp is Off -There,s no bubble -Non electrolyt
3. Orange water- C6H8O7 - lamp is On -There’s a bubble -Strong electrolyt
4. Belimbing water -None -lamp is On -There’s a bubble -Strong electrolyt
5. Detergen -H3PO4 -lamp is Off- There’s a bubble -Weak electrolyt
6. Table salt -NaCl -lamp is On -There’s a bubble- Strong electrolyt
7. Sugar- C12H22O11-lamp is Off- There’s no bubble- Non electrolyt
Conclusion :
After we did the observation, we know that orange water, belimbing water, and table salt are strong electrolyt solution because when we put the end of wire into the solution there are many gas bubbles near the end of wire and the lamp could be on. Meanwhile, well water and detergen classified as weak electrolyt solution because when we put the end of wire into the solution, the lamp didn’t turn on, but there are many gas bubbles near the end of wire. While alcohol and sugar solution classified as non-electrolyt solution because when we put the end of wire into the solution the lamp didn’t turn on and there isn’t gas bubbles near the end of wire.
No comments:
Post a Comment