2nd Organic chemistry xperiment.docx

Then the precipitate formed for the for the 1

Info icon This preview shows pages 6–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Then, the precipitate formed for the for the 1-iodobutane are the most due to the reaction had been completely took place. Then, the precipitate formed for 1-bromobutane are in between the number of precipitate formed of 1-iodobutane and 1-chlorobutane. However, the precipitate formed for the 1-chlorobutane are the least. This is due to the time taken to react was the fastest which does not provide sufficient time to completely react. In this experiment, there are some error may occur such as the inaccurate time measured. This might due to the uncooperatively of the timekeeper and also the instrumental error such as zero error occurred. Other than that, the incorrect estimate for the precipitate by student may also occur in this experiment. This is due to everyone have different opinion on the precipitate
Image of page 6

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
formed. In order to prevent this error, the experiment have to be repeatability which which carry out at the same time by a same person under the same condition. Then, overshoot of the alkyl solution may also occur. This will result in the inaccurate result of the experiment due to excess of certain solution. Question 1. List the compounds in the order of speed of hydrolysis, fastest first. 1-iodobutane will be the first, then 1-bromobutane, and lastly 1-chlorobutane. However, chlorobenzene will not undergo hydrolysis because of the stable benzene ring and make chlorobenzene to be unreactive. 2. Suggest an explanation for this order in terms of the C-halogen bond energies. For halogenoalkanes, the energies bond of halogen is stronger when going up the group in Periodic Table as the halogen is getting smaller. The C-halogen bond gets weaker when going down instead, so the bond is easier to be broken and react with other elements, which means it is more reactive. However, chlorobenzene will stay unreactive because it has a very stable benzene ring that will not break easily and so stay in the environment for a long time, so it does not have any reaction occurred. 3 . Write an equation for the hydrolysis reactions which occur in this experiment. 1-chlorobutane C H -Cl + H O ------------> C H -OH + H + Cl Ag (aq) + Cl (aq) --------> AgCl (s) 1-bromobutane C H -Br + H O -------------> C H -OH + H + Br Ag (aq) + Br (aq) --------> AgBr (s) 1-iodobutane C H -I + H O --------------->C H -OH + H + I Ag (aq) + I (aq) --------> AgI (s) Chlorobenzene C H -Cl + H O -----------------> No Reaction C H OH C H OH C H OH C H OH
Image of page 7
Conclusion In conclusion, alkyl halides will form precipitate and they are reactive when react with silver nitrate solution. For aryl halides, as it is unreactive so it will not react with silver nitrate solution and form precipitate. Besides, the weaker the carbon-halogen bond, the easier the bond to be broken to form halide ion, the more reactive the reaction for halogenoalkanes. Reference - Chemguide ,2017 - Differences between halogenoalkanes and halogenoarenes (Online) URL : http://www.chemguide.co.uk/organicprops/haloalkanes/agno3.html (Accessed: 18/11/2017) - Chemguide,2017 - Definition of halogenoarenes (Online) URL : http://www.chemguide.co.uk/organicprops/arylhalides/background.html (Accessed: 18/11/2017) - 4college,2017 - Organic Halogen Compound (Online) URL : http://www.4college.co.uk/as/atm/halogens.php (Accessed: 18/11/2017) -
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern