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Investigation in to the existence of hydrogen bonds between ethanol molecules.


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Investigation in to the existence of hydrogen bonds between ethanol molecules.

... Experiment 9 Aim A. To investigate the existence of hydrogen bonds between ethanol molecules. B. To measure the strength of hydrogen bond formed between ethanol molecules C. To investigate the formation of hydrogen bonds between molecules of ethyl ethanoate and trichloromethane. D. To measure the strength of hydrogen bond formed between molecules of ethyl ethanoate and trichloromethane. Procedure A. 1. 10 cm3 of ethanol was added into an insulated 50 cm3 beaker by using a measuring cylinder. The temperature of the liquid was measured. 2. 10 cm3 of cyclohexane was added to the ethanol in the beaker. It was then mixed well and the lowest temperature attained was recorded. B. 1. 10 cm3 of ethanol was added into an insulated 50 cm3 beaker by using a measuring cylinder. The temperature of the liquid was measured. 2. 20 cm3 of cyclohexane was added to the ethanol in the beaker. It was then mixed well and the lowest temperature attained was recorded. C. 1. 10 cm3

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User Reviews of this Essay

What our users think of this essay:

"Quite weak. The format used for this write-up is rather unhelpful to the reader who is not already aware of the experiments being performed - the way that the report 'jumps' between four separate experiments makes it somewhat difficult to follow. In terms of the actual content, it's disappointing to see no discussion of the background theory to begin with. While the method is clearly stated in each case, the way in which the results are reached is not immediately obvious, particularly as *no* results are stated for two of the four, and the calculations show a lack of awareness of the importance of consistent precision - the data cannot justify answers to 6sf! I can't really properly assess the discussion, as the author is clearly answering pre-set questions, but the questions themselves are not stated. It would have been good to see an attempt to expand the scope of the work beyond the narrow confines of pre-set questions, and also to carry out an evaluation of the experiment's success (e.g. error analysis). TSR User: Illusionary"
TSR

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