{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Postlab1 - Lab Instructor Lab Section 7(b A student...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Name: _____________________________ Date: _________________________________ Lab Instructor: ______________________ Lab Section: ___________________________ 6 EXPERIMENT 1 Synthesis of Potassium Ferric Oxalate Trihydrate Postlaboratory Questions: 1. Speculate as to why your percent yield was less than 100%. 2. What advantage is there to calculating the percent yield for each step of a multi-step synthesis, rather than determining the percent yield of the final product only? 3. The K 3 Fe(C 2 O 4 ) 3 3H 2 O synthesized in this experiment can be analyzed by oxidation of the oxalate ion (C 2 O 4 2- ) by the permanganate ion (MnO 4 - ) according to the following reaction: 16 H + + 5 C 2 O 4 2- + 2 MnO 4 - 10 CO 2 + 2 Mn 2+ + 8 H 2 O (a) Calculate the percent by weight of oxalate in K 3 Fe(C 2 O 4 ) 3 3H 2 O.
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
Name: _____________________________ Date: _________________________________
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Lab Instructor: ______________________ Lab Section: ___________________________ 7 (b) A student synthesized 0.832 g of K 3 Fe(C 2 O 4 ) 3 ⋅ 3H 2 O by following the same instructions as given in this experiment. This 0.832 g sample reacted with exactly 14.01 mL of 0.138 M KMnO 4 according to the balanced equation above. Calculate the percent by weight of oxalate in the sample and compare it with the answer to part (a). 4. The experimental procedure directed you to cover the stored beaker to prevent complete evaporation of the water. Evaporation of all the water would have made it impossible to separate the desired product from “other salts, which would have remained in solution.” Assuming Fe(NH 4 ) 2 (SO 4 ) 2 ⋅ 6H 2 O is the limiting reactant, what other oxalate salt would most likely be in solution?...
View Full 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