CHM10506__Report for Limiting and excess reagents(week_5).doc

CHM10506__Report for Limiting and excess reagents(week_5).doc

This preview shows page 1 out of 4 pages.

Report for GENERAL CHEMISTRY EXPERIMENT EXPERIMENT. LIMITING AND EXCESS REAGENTS Section Group Name Student ID Lab partner name CHM10504 5 Answer in your own words . Be sure to explain all questions 1. Introduction 3point The purpose of this experiment is determining which reactant is limiting reactant to prove the law of conservation of mass (Mass is neither created nor destroyed in chemical reactions) from reaction between NaHCO 3 (baking soda) and HC 2 H 3 O 2( acetic acid), and calculate the actual and theoretical yield. The following is the reaction equation. NaHCO 3 (s) + HC 2 H 3 O 2 (aq) CO 2 (g) + H 2 O(aq) + NaC 2 H 3 O 2 (aq) When reaction between occurs, one substance may be completely consumed when the others is remained yet. The substance consumed first is limiting reactant. The left substance is excess reactant. The amount product of this reaction is determined by limiting reactant. We can prove the law of conservation of mass by comparing the total mass of reactants before start reaction with the reaction is finished. 2. Experimental 3point The procedure section should reference the lab manual and describe how you did your experiment and include any changes made to the procedure during the lab. Part1. We prepare six different amount of NaHCO 3 ; 0.50, 1.00, 1.70, 2.00, 2.50, 2.70 grams and put each amount of NaHCO 3 in the balloon which is labeled 1 to 6, using plastic funnel. Then I measured 20.0ml of 1.00M vinegar into each six flasks. Next, put balloon on entrance of each flask
Image of page 1
You've reached the end of this preview.

{[ 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