Print Calculator Periodic Table Question 1 of 8 Sapling Learning a) What is the

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Print Calculator Periodic Table Question 1 of 8 Sapling Learning a) What is the heat capacity of liquid n-hexane at 34.0°C? Number kJ / (mol·°C) b) What is the heat capacity of gaseous n-hexane at 34.0? Number kJ/(mo ) c) What is the heat capacity of crystalline calcium carbide at 34.0? Number kJ/ mol1 d) What is the change in specific enthalpy, dH. of gaseous n-hexane from 34.0°C to 315°C? Number kJ/mo Scroll down for more questions. Previous Give Up & View Solution Check AnswerNext Exit Hint

Explanation / Answer

Heat capacity data are available in literature see the wikipedia page https://en.wikipedia.org/wiki/Hexane_(data_page)

The heat capacity of liquid n-hexane is 197.66 J/(mol K)

The heat capacity of n-hexane gas is 142.6 J/(mol K)

The heat capacity of Calcium carbide is 64.7 J/mol.K

Q = heat required to raise the temperature from 34 - 68.8 + heat of vapourization + heat required to raise the temperature of gaseous n-hexane to 315 C

Q = 1 mole x 197.66 J/(mol K) x 68.8-34 + 28.85 kJ + 1 mole x 142.6 J/(mol K) x 315-68.8

Q = 70836 J or 70.84 kJ/mol this is the delta H

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