Which equation represents a spontaneous reaction?
- Mayya Alocci
- Aug 7, 2023
- 1 min read
August 2019 NY Regents Chemistry Exam
47. Which equation represents a spontaneous reaction?
Solution: Table J on the Reference Table shows metals from the most active to the least active. When a more active metal reduces a less active metal, the reaction will be spontaneous. For example, in choice 1, Ca is lower than Ba on Table J and would not be able to reduce it.
Answer: 4
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