{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Chem 201 lab 1(2009)

Chem 201 lab 1(2009) - Nafe Qureshi 34135790 EXPERIMENT 1...

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

View Full Document Right Arrow Icon
Nafe Qureshi 06/01/09 34135790 EXPERIMENT # 1 Learning Basic Operations Introduction A) The purpose of this experiment was to become familiar with the laboratory. Basic laboratory operations like measuring mass and volume, using vacuum filtration, and drying solids were learned. We first start with cleaning the glass wear then with clean lab equipment we weighed the preservative and then mixed it cautiously with the acid. Then chilled the solution, which caused the reaction to go to completion, which subsequently produced a testable amount of the product. The solid product was then subject to vaccum filtration. Air dried the solid and weighed it to check how much product was there in respect to theoretical yield. Chemical Reaction Hydrochloric acid was added to a solution of sodium benzoate. The sodium benzoate dissociates into benzoate ions and sodium ions in water: C 6 H 5 COONa C 6 H 5 COO - + Na + . The hydronium ion is formed when a proton transfers from an HCl molecule to water: HCl + H 2 O Cl - + H 3 O + . Protons transfer from H 3 O + to the benzoate ions to make benzoic acid: C 6 H 5 COO - +H 3 O + C 6 H 5 COOH + H 2 O. The net reaction is C 6 H 5 COONa + HCl C 6 H 5 COOH + NaCl.
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
Image of page 2
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