What is the least possible ODP for a refrigerant?

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Prepare for the SkillCat EPA Type 2 Test with interactive flashcards and multiple-choice questions. Each question is accompanied by hints and explanations. Get ready to pass your exam!

Multiple Choice

What is the least possible ODP for a refrigerant?

Explanation:
ODP stands for ozone depletion potential, a relative measure of how much a substance can destroy ozone in the stratosphere, using CFC-11 as the 1 reference. Substances that contain chlorine or bromine and reach the ozone layer can have positive ODP values because they participate in catalytic ozone destruction. Refrigerants that do not release chlorine or bromine—such as many HFCs and other zero-ODP substitutes—have an ODP of zero because they don’t contribute to ozone depletion. So the least possible ODP a refrigerant can have is zero. Remember that zero ODP doesn’t guarantee no other environmental impacts, like high global warming potential, but it means no ozone depletion.

ODP stands for ozone depletion potential, a relative measure of how much a substance can destroy ozone in the stratosphere, using CFC-11 as the 1 reference. Substances that contain chlorine or bromine and reach the ozone layer can have positive ODP values because they participate in catalytic ozone destruction. Refrigerants that do not release chlorine or bromine—such as many HFCs and other zero-ODP substitutes—have an ODP of zero because they don’t contribute to ozone depletion. So the least possible ODP a refrigerant can have is zero. Remember that zero ODP doesn’t guarantee no other environmental impacts, like high global warming potential, but it means no ozone depletion.

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