Experiments: 1. Standardization of sodium hydroxide by ethanedioic acid solution 2. Determination of the concentration of commercial colourless vinegar Standardization of sodium hydroxide by ethanedioic acid Objective: To determine the molarity of sodium hydroxide. As the molarity of the sodium hydroxide is unknown, in order to standardize it, the concentration of the acid has to be known. Result: Titration Trial 1 2 3 4 Initial burette reading() 18. 33 8. 05 7. 52 8. 21.
Final burette reading() 45. 48 36. 25 35. 79 36. 82 Volume of sodium hydroxide solution used() 27. 15(rejected) 28. 20 28. 27 28. 61 Average volume of sodium hydroxide solution used() 28. 36 Treatment for result: Molarity of the standard ethanedioic acid solution Mass of ethanedioic acid= 0.
8g Molar mass of ethanedioic acid= 2? (12+16+16+1) +2? (1+1+16) = 126 Number of mole of ethanedioic acid= 6. 35? Molarity of the ethanedioic acid= = 0. 025M Molarity of the sodium hydroxide solution.
Number of mole of 25. 0 ethanedioic acid= 6. 35?? 10 = 6. 35? Number of mole of sodium hydroxide = 6. 35?? 2 = 1. 27? Molarity of sodium hydroxide= 1. 27? = 0. 045M Determination of the concentration of commercial colourless vinegar Objective: The concentration of ethanoic acid in different brands of vinegar would be determined. As the compositions of vinegar in different brands are different, the highest concentration of ethanoic acid in the vinegar was said to be the best to buy.
Result: Titration Trial 1 2 3 4 Initial burette reading() 5. 99 9. 28 8. 50 7. 05 Final burette reading() 20. 32 26. 22 25. 17 23. 86 Volume of sodium hydroxide solution used() 14. 33(rejected) 16. 94 16. 67 16. 80 Average volume of sodium hydroxide solution used() 16. 81 Treatment for result: * Concentration of ethanoic acid in the commercial vinegar(ShanTou) Number of mole of sodium hydroxide = 0. 045? 0. 01681 = 7. 56? ?Number of mole of ethanoic acid = 7. 56?
Remember! This is just a sample.
You can get a custom paper by one of our expert writers.
Get your custom essay
Helping students since 2015
Essay Writing Service Features
Our Experience
No matter how complex your assignment is, we can find the right professional for your specific task. Contact Essay is an essay writing company that hires only the smartest minds to help you with your projects. Our expertise allows us to provide students with high-quality academic writing, editing & proofreading services.
Free Features
Free revision policy
$10Free bibliography & reference
$8Free title page
$8Free formatting
$8How Our Essay Writing Service Works
First, you will need to complete an order form. It's not difficult but, in case there is anything you find not to be clear, you may always call us so that we can guide you through it. On the order form, you will need to include some basic information concerning your order: subject, topic, number of pages, etc. We also encourage our clients to upload any relevant information or sources that will help.
Complete the order form
Once we have all the information and instructions that we need, we select the most suitable writer for your assignment. While everything seems to be clear, the writer, who has complete knowledge of the subject, may need clarification from you. It is at that point that you would receive a call or email from us.
Writer’s assignment
As soon as the writer has finished, it will be delivered both to the website and to your email address so that you will not miss it. If your deadline is close at hand, we will place a call to you to make sure that you receive the paper on time.
Completing the order and download
