q6p302 and q6p302key - CH302 TA Practice Quiz 6 In...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CH302 TA Practice Quiz 6 In principle this can be done without a calculator if you use the hints provided and a piece of scratch paper. Note: ln 2 = .693 1. Consider the reaction below. Which of the following is the correct rate expression? 2A + B 2C a. - [A]/(2 t) = - [B]/( t) = [C]/( t) b. - [A]/( t) = - [B]/(2 t) = - [C]/( t) c. [A]/(2 t) = - [B]/( t) = [C]/(2 t) d. - [A]/(2 t) = - [B]/( t) = [C]/(2 t) 2. Consider the data below: Experiment Initial [Xe] (M) Initial [F 2 ] (M) Initial Rate (M/sec) 1 0.5 0.25 0.00156 2 1.5 1.0 0.05625 3 0.75 0.25 0.0032 4 1.50 0.25 0.01406 5 0.5 1.0 0.00625 Which of the following is a correct rate law for the reaction between Xe and F 2 ? a. r = k[Xe][F 2 ] b. r = k c. r = k[Xe][F 2 ] 2 d. r = k[Xe] 2 [F 2 ] 3. What is the order of the reaction if k = 5 x 10 7 M -2 s -1 ? a. 1st order b. 2nd order c. 3rd order d. 0th order 4. Consider a reaction with the activation energy of 1.6 kJ/mol. At room temperature k = 2.3x10 3 s -1 . Calculate the temperature when the rate constant is 2.2x10 3 s -1 . (Hint: ln(0.9565) = -0.045) a. 279K b. 300K c. 298 K d. 295 K
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
5. You sneak 500 Cheetos into a movie theatre where the movie playing is 90 minutes long. If the rate constant for your Cheetos-eating is 5 Cheetos per minute, how many Cheetos do you have in your possession when a theatre-employee throws you out of the movie for texting after 40 minutes? a. None, he forcefully removed them from you along with your cell phone. b. 200 c. 300 d. 50 6. If the half life of a compound is 13.86 seconds and it decays in a first order reaction, what is the reaction constant, k? [C 0 ] = 2 M a. .05 M/s b. .072 M/s c. .05 s -1 d. .072 s -1 7. Which of the following statements about collision theory is incorrect? a. Collision theory derives from many
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

q6p302 and q6p302key - CH302 TA Practice Quiz 6 In...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online