Chemical Kinetics 1 Overview Getting Started Techniques Procedure FAQ Full Lab Manual Introduction & Goals Chemistry & Background Key Questions Prelab Problems Safety Procedure In Your Write-up Experiments Index ChemLab Home		FAQ Index Question 1 How do I tell the difference between a test tube and a cuvet? Does it matter if I use a test tube? Question 2 What is the difference between a Mohr pipet and a volumetric pipet? Question 3 What should I study to prepare for the Safety Quiz? Question 4 In prelab problem 2, when you say to assume that the reaction is 1st order with respect to all reactants, does that mean that the total is 1st order or that the exponent on each reactant is 1? Submissions Submit a question or an answer to the FAQ Questions & Answers Question 1 How do I tell the difference between a test tube and a cuvet? Does it matter if I use a test tube? Professor Milde A cuvet is marked at the top with a vertical white line of a letter F in a fancy circle. A cuvet has much better optical quality than a test tube and will give more consistent absorbance readings. Question 2 What is the difference between a Mohr pipet and a volumetric pipet? Professor Milde A Mohr pipet is graduated and can deliver a range of volumes, generally from 1 to 10 mL. A volumetric pipet is calibrated to deliver one specific volume. In this experiment, you will use a 2 mL volumetric pipet to deliver the triiodide solution to your reaction mixture. Question 3 What should I study to prepare for the Safety Quiz? Professor Milde It's more of a scavenger hunt than a quiz. You will label the map in your manual with the location of safety equipment, in the lab, while looking at the equipment. Then you will tear it out and give it to your TA. No studying is needed for the quiz. But you do need to prepare for lab by doing the prelab problems, writing a procedure, and looking at the website. This way you will be ready for the experiment. Question 4 In prelab problem 2, when you say to assume that the reaction is 1st order with respect to all reactants, does that mean that the total is 1st order or that the exponent on each reactant is 1? Professor Milde You should assume that the reaction is first order with respect to EACH reactant, for an overall reaction order of 3. Submissions Submit to the FAQ You can submit either a question or an answer to a question about this week's experiment. Your submission will be mailed to the site editor, who will respond to you directly and also add your submission to the FAQ page. Having trouble with the submission procedure? Check your Kerberos installation. If you lose the FAQ Submission window it may be hidden behind another browser window.
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