Given the Following Data $\Delta$ H_f,S°,respectively)for N₂O₄(l)-20

question 55

Multiple Choice

Given the following data ( $\Delta$ H_f,S°,respectively) for N₂O₄(l) -20.kJ/mol,209.0 J/K mol,and N₂O₄(g) 10.kJ/mol,304.2 J/K mol.Above what temperature (in °C) is the vaporization of N₂O₄ liquid spontaneous?

• A)Above -178 °C.
• B)Above -231 °C.
• C)Above 3 °C.
• D)Above 30. °C.
• E)Above 42 °C.

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Definitions:

Expected Frequencies

Expected frequencies refer to the anticipated count of occurrences in each category of a distribution, based on a probability model or theory, used in chi-square testing.

Chi-square Statistic

The chi-square statistic measures how expectations compare to actual observed data, used primarily for categorical data.

Expected Frequencies

In statistics, the anticipated count of occurrences across different categories based on a theoretical distribution.

Null Hypothesis

In hypothesis testing, it's the assumption that there is no significant difference or effect.