4 d How many grams of nitrogen dioxide would be produced in the reaction above

4 d how many grams of nitrogen dioxide would be

This preview shows page 4 - 6 out of 6 pages.

of mater and assume the unknown compound is a liquid. /4 (d) How many grams of nitrogen dioxide would be produced in the reaction above? /6 (d) Suppose an insufficient amount of oxygen is used for the combustion analysis and some of the carbon is converted into carbon monoxide instead of carbon dioxide. If an empirical formula is determined using only the mass of collected carbon dioxide to determine the amount of oxygen, will the empirical formula determined from the results be too high or too low in carbon? Assume other product yields are unchanged. Explain. /2
Image of page 4
CHEM111 Practice E1 Spring 2015 1) 11) (20 points) You take 1.00 g of aspirin (CxHyOz) and burn it to collect 2.2 g carbondioxide (44.01 g mol-­‐1) and 0.400 g water (18.015 g mol-­‐1). You know that the molarmass of aspirin is between 170 and 190 g mol-­‐1.(a)What is the empirical formula of aspirin?(b)What is the molecular formula of aspirin?(c)Reacting 1 mole of compound SA and 1 mole of acetic anhydride (C2H6O3) gives you1 mole of aspirin and 1 mole of acetic acid (C2H4O2). What is the molecular formulaof SA?
Image of page 5
CHEM111 Practice E1 Spring 2015 Grading Questions Score Out of 1 to 7 /14 8 /18 9 /20 10 /24 11 /24 Total /100
Image of page 6

You've reached the end of your free preview.

Want to read all 6 pages?

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture