a)
Interpretation: Effect on observed temperature if thermometer bulb is placed below condenser should be determined.
Concept introduction: Distillation is technique that is used to separate components of liquid mixture with help of selective boiling and condensation. This procedure either separates components partially or completely from mixture. It is one of physical processes to separate mixtures and not by
b)
Interpretation: Effect on observed temperature if thermometer bulb is placed above condenser should be determined.
Concept introduction: Distillation is technique that is used to separate components of liquid mixture with help of selective boiling and condensation. This procedure either separates components partially or completely from mixture. It is one of physical processes to separate mixtures and not by chemical reactions.
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EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
- Why does the temperature on the thermometer decrease after collecting the first fraction before increasing to the second fraction?arrow_forward1. The entire mercury bulb of the thermometer must be below the level of the side arm in order to obtain an accurate reading of the distillation temperature. Why is this so?2. Why is cold water circulated through the condenser from the bottom rather than from the top?4. In most distillations, the total volume of liquid obtained (distillate + residue) is not equal to the volume of the mixture introduced into the flask. What are the possible sources of loss in this procedure?arrow_forwardCalculate the Constant Weight (in grams) of the Empty Crucibles. Show your solution. Crucible No. 1 2 3 Weighing 1 22.6035 22.0223 24.1535 Weighing 2 22.6017 22.0204 24.1533 Weighing 3 22.5994 22.0199 - Weighing 4 22.5992 - - Constant Weight, g ??? ??? ???arrow_forward
- Suppose that you had calibrated the thermometer in your melting-point apparatus against a series of melting-point standards. After reading the temperature and converting it using the calibration chart, should you also apply a stem correction? Explain.arrow_forwardThe amounts reported for the monitored ingredients under internal standard calibration are insensitive to illegal dilutions performed to the preparations, once the internal standard substance was in. True Falsearrow_forwardIt is emphasized in the procedure that the water bath should be continuously stirred while heating and cooling the sample. What will happen if the water bath was not stirred? Identify its effect to the related derived dataarrow_forward
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- A schematic representation of the distillation apparatus used in Station A is shown below. Select the image that best represents what you would observe on the molecular level in the portion of the distillation apparatus designated by the red arrow.arrow_forward1. What is the purpose of stirring the contents of thecalorimeter before the final temperature is taken?arrow_forward1-propanol, 2-propanol, and 1-butanol all have boiling too close together to be separated using the simple distillation column. What equipment be used to separate a mixture of these three?arrow_forward
- Macroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks Cole