Estimate the Enthalpy of Vaporization of CCl₄ Given That at 25

question 1

Multiple Choice

Estimate the enthalpy of vaporization of CCl₄ given that at 25 ^$\circ$ C and 58 ^$\circ$ C its vapor pressure is 107 and 405 Torr,respectively.Assume that the enthalpy of vaporization is independent of the temperature.

• A)486 J.mol^-1
• B)48.6 kJ.mol^-1
• C)142 kJ.mol^-1
• D)3.98 kJ.mol^-1
• E)33.1 kJ.mol^-1

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Definitions:

Contribution Margin

The amount remaining from sales revenue after all variable expenses have been deducted, indicating the ability to cover fixed costs and generate profit.

Total Contribution Margin

The difference between total sales revenue and total variable costs, measuring how much revenue covers fixed costs and profits.

CVP Graph

A visual representation of the Cost-Volume-Profit analysis that illustrates the relationships between costs, volume, and profit.

Total Fixed Expenses

Total fixed expenses refer to the sum of all costs that do not change with the level of production or sales over a certain period.