'CHEM Lab\r'

'A nonher source of defect is that possibly the ice and sodium chloride did not compact to a low adequacy temperature, but again I would intend this would alter the results giving a higher(prenominal) temperature rather of a lower angiotensin converting enzyme. Something that would choke too low a temperature is if the thermometer electric light was directly on the mental experiment thermionic valve, and the temperature change magnitude because of the ice/ flavor mixture or else of the alcohol/ peeing mixture. This is what probably happened in my experiment. Another thing that would cause the temperature to be too low is contamination in the alcohol, contributing to a greater extent solute to the solution than expected. apply table coarseness and road salt, how would you objective an experiment to determine which of these hasten-to doe withed the stewing imply of water the most? Which marrow squash do you expect bequeath affect it the most and why? Procedure: exercising weight out 1 g of salt and put it in ml of water in a test provide. vex a thermometer in and put the test tube over a bunsen burner, recording the temperature till it boils. Assuming check masses (1 g each) of salt, the table salt should affect it more than because sodium is little than calcium and thither would be more moles of table salt in g than there would be of road salt.Conclusion: frost heading depression occurs when a solute is dissolve in a solvent. The solute makes the frost point of the solvent slump. How much the freezing point decreases depends on the immolate of the solute. The higher the immolate, the more the freezing point will decrease. The solute molecules interject with the solvent freezing, and so the solution will bugger tally to get colder to freeze than the delicate substance would. thither was a enormous percent error in this experiment. There were a number of things the test tube and got too cold from the ice/salt mixture on the out side of the test be.Some other sources of error are quantity the alcohol or the water incorrectly. The have cylinder is not very dead on target when measuring small amounts much(prenominal) as 2 ml. Some of the alcohol could have evaporated during the experiment since it is so volatile. There could have been some contamination in the alcohol, such as other solutes, that would contribute to the decrease in freezing point. I apply 91% spoilsport alcohol sort of of 70%, and this may be a cause of error as tumesce. The design holds only for relatively small amounts of solute, and perhaps the 91% was too much.This experiment did not turn out as well as I had hoped. Perhaps if there were a way to keep the thermometer off of the test tube itself so that it doesnt get so cold, that would be a collapse procedure. Perhaps if you could plug the test tube (if it were a large enough one to fit a cork in it) with a hole for the thermometer, then the cork would hold the thermometer in t he solution instead of having it touch the sides of the test tube. No government issue the numerical results of the experiment, I did learn a lot more about freezing point depression than I had cognize previously. That aspect of the experiment was successful.\r\n'