A Sample of Solid Naphthalene Is Introduced into an Evacuated $\circ$

question 98

Multiple Choice

A sample of solid naphthalene is introduced into an evacuated flask. Use the data below to calculate the equilibrium vapor pressure of naphthalene (C₁₀H₈) in the flask at 35 ^$\circ$ C. $\begin{array}{lcc}&\Delta \mathrm{H}^{\circ}{ }_{\mathrm{f}}\left(25^{\circ} \mathrm{C}\right) & \Delta \mathrm{G}^{\circ}_\mathrm{f}\left(25^{\circ} \mathrm{C}\right) \\\hline\mathrm{C}_{10} \mathrm{H}_{8}(\mathrm{s}) & 78.5 \mathrm{~kJ} / \mathrm{mol} & 201.6 \mathrm{~kJ} / \mathrm{mol} \\\mathrm{C}_{10} \mathrm{H}_{8}(\mathrm{g}) & 150.6 \mathrm{~kJ} / \mathrm{mol} & 224.1 \mathrm{~kJ} / \mathrm{mol}\end{array}$

• A) 890. mmHg
• B) 0.21 mmHg
• C) 696 mmHg
• D) 0.086 mmHg
• E) 833 mmHg

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Definitions:

Critical Value

The threshold value that the test statistic must exceed in order for the null hypothesis to be rejected in hypothesis testing.

F-Table

A table used in statistics that displays the critical values of the F-distribution, which is utilized in analysis of variance (ANOVA) and other tests that compare variances.

Stratum Corneum

The outermost layer of the epidermis, consisting of dead keratinocytes, that provides a barrier against environmental damage.

Cuticle

The protective layer, often of dead cells, found at the surface of the skin or around the base of nails and hair.