{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

ANALYSIS OF VITAMIN C

ANALYSIS OF VITAMIN C - ANALYSISOFVITAMINC ABSTRACT:, AS AN...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
ANALYSIS OF VITAMIN C ABSTRACT: IN THIS LABORATORY EXPERIMENT, THE TRIIODIDE ION WAS USED  AS   AN  OXIDIZING   AGENT.   THE   TRIIODIDE   ION  WAS   STANDARDIZED   BY   ADDING   A  SMALL KNOWN AMOUNT OF POTASSIUM IODATE (1.0564 G) IN AN EXCESS OF KI AND  H 2 SO 4 . THE KNOWN EXCESS OF THE TRIIODIDE ION (0.001481 MOLES) GENERATED  FROM   THE   REACTION   OF   IODATE   WITH   IODINE   WAS   THEN   REACTED   WITH   THE  ABSORBIC ACID. THE ABSORBIC ACID USED FOR THIS LABORATORY EXPERIMENT  WAS   TANG.   THE   EXCESS   I 3 -   WAS   THEN   BACK   TITRATED   WITH   THIOSULFATE  SOLUTION, WITH THE USE OF STARCH TO FORM A COLOR CHANGE INDICATING THE  END-POINT OF THE TITRATION. 
Image of page 1

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

View Full Document Right Arrow Icon
RESULTS Weight of Na 2 S 2 O 3 ٠ 5H 2 0: 8.7369 grams Weight of Na 2 CO 3 : 0.0522 grams Weight of KIO 3 : 1.0564 grams Moles KIO 3 : 1.0564 grams / 214 grams per mole (molecular weight) = 0.00494 moles Concentration KIO 3 : 0.00494 moles / 0.5 Liters = 0.00987 M
Image of page 2
Image of page 3
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