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

question 49

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 $\Delta$ S° reaction (in kJ/mol K) .

• A)0.2777
• B)0.8612
• C)0.7475
• D)0.6338
• E)0.1590

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