Chem 144 Class test 2015 Memo.pdf - Van en Voorletters...

This preview shows page 1 - 2 out of 15 pages.

1 Van en Voorletters Surname and Initials: MEMO Student no: CHEMISTRY 144 CLASS TEST SEPTEMBER 2015 TIME : 120 MIN Dr M Lutz* Prof C Esterhuysen Dr M le Roux Dr R Luckay Dr T le Roex Prof W van Otterlo Dr G Arnott Dr S Pelly 70 * Sameroeper Convener NB: 1. Hierdie klastoets vraestel beslaan 15 gedrukte bladsye. Kontroleer dat dit korrek is. 2. Hierdie vraestel bestaan slegs uit multikeuse vrae en moet volgens die eliminasiemetode beantwoord word. 3. In elke vraag moet jy die verkeerde opsies (tot en met vier) kies waarvan jy seker is. 4. Elk van die vier moontlik verkeerde opsies tel 25 % van die totaal van daardie vraag. 5. In die geval waar die korrekte antwoord as ʼn opsie gekies is, sal dit outomaties tot nul vir die vraag lui. 6. Werk asb slegs in donker grys potlood of swart pen. 7. Geen antwoorde mag uitgekrap word nie. 8. Omkring asb jou antwoorde eers op die vraestel voordat jy dit met sekerheid oordra na die antwoordblad. 1. This class test paper comprises 15 printed pages. Check that this is correct. 2. This paper consists of only multiple choice questions and needs to be answered according to the elimination method . 3. In each question you need to choose the incorrect options (up to four) of which you are sure. 4. Each of the four possible incorrect options counts 25 % of the total of the question. 5. In the case where the correct answer is chosen as an option, this will automatically lead to zero for the question. 6. Please work only in dark grey pencil or black pen. 7. No answers may be crossed out. 8. Please circle all your answers on the question paper before transferring them to the answer sheet.
Image of page 1

Subscribe to view the full document.

2 1. By ewewig _______ At equilibrium _____ a. het al die chemiese reaksies opgehou. b. is die tempo van die voorwaartse en terugwaartse reaksies gelyk. c. is die tempokonstantes van die voorwaartse en terugwaartse reaksies gelyk. d. is die waarde van die ewewigskonstante 1. e. is die beperkende reaktant opgebruik. a. all chemical reactions have ceased. b. the rates of the forward and reverse reactions are equal . c. the rate constants of the forward and reverse reactions are equal . d. the value of the equilibrium constant is 1. e. the limiting reagent has been consumed. [1] 2. Wat sal die waarde wees van die ewewigskonstante vir die reaksie hieronder ? What would the value of the equilibrium constant be for the reaction below? A(g) 2C(g) + D(s) a. 4.8 b. 0.833 c. 0.4 d. 1.2 e. 2.5 [2]
Image of page 2
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