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# Explanation of melting and boiling point deviations

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I only need help on question 3.

I have perfomed the labs for melting pt and boiling pt on the following four and only need help with question 3
acetonitrile (C&#8322;H&#8323;N): GIVEN MP = -45.5C, BP = 77.3C
My results MP= -46.8 C, BP = 79.4 C

benzene (C6H6) GIVEN MP = 6.0C, BP = 80.0C
My results MP= 5.4 C BP= 82.5 C

carbon tetrachloride (CCl&#8324;):GIVEN MP = -23.0C, BP = 77.0C
My results MP=-22.3 C, BP -79.4 C

cyclohexane (C6H&#8321;&#8322;): GIVEN MP = 7.0C, BP = 81.0C
My results MP= 6.5 C, BP = 82.7 C

2. For each unknown liquid, record the following:

(b) the percent deviation of each substance, given by:

percent deviation = |(measured value) - (literature value)| / |(literature value)| * 100%

3. Discuss the possible reasons for the discrepancies between the experimental results and the literature values.