Help please T CC) 18) The phase diagram of a substance is given above. This subs
ID: 693778 • Letter: H
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Help please
T CC) 18) The phase diagram of a substance is given above. This substance is a at 0°C and 15) 1.0 atm. A) liquid B) solid C) gas D) crystal E) supercritical fluid 19) 19) What is the name of the point labelled as"z" on the phase diagram shown above? A) critical pressure C) point of supercritical fluid B) triple point D) critical temperature ESSAY. Write your answer in the space provided or on a separate sheet of paper Explain what change occurs to the viscosity of the following compound when the temperature changes from 25C to 50C. Explain the reason for this change. 20) - CH3CH2CH2CH2CH2CH3Explanation / Answer
20) Given compound is Hexane
CH3CH2CH2CH2CH2CH3
Visocosity of the Hexane decreases as the temperature increases from 250 C to 500 C.
As the temperature increases, molecules gain more energy to escape from the mutual attaraction and hence the viscosity decreases and flow becomes less viscous.
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