When Ignited,solid Ammonium Dichromate Decomposes in a Fiery Display $\Delta$ G° (In KJ/mol)

question 18

Multiple Choice

When ignited,solid ammonium dichromate decomposes in a fiery display.This is the reaction for a "volcano" demonstration.The decomposition produces nitrogen gas,water vapor,and chromium(III) oxide.The temperature is constant at 25°C.

-Determine $\Delta$ G° (in kJ/mol) .

• A)-191.4
• B)-2281.4
• C)-38.9
• D)1903.6
• E)-1555.4

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Definitions:

Face Validity

The degree to which a test or measure appears to assess what it claims to measure, based on a superficial examination, rather than through rigorous validation methods.

Anxiety Construct

A psychological framework or model representing the various aspects and manifestations of anxiety as a mental health condition.

Content Validity

The extent to which a test measures all aspects of the concept or construct it is intended to assess.

Cronbach's Alpha

A measure of internal consistency or reliability of the items in a test or questionnaire, indicating how closely related the items are as a group.