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In Chemistry / College | 2025-07-03

HFC-134a has replaced which of the following in all MVAC systems?
A. HFC-777
B. CFC-12
C. HFC-143a
D. HFC-123a

Asked by bbmwcmkfcz

Answer (2)

HFC-134a replaced CFC-12 in all mobile vehicle air conditioning systems due to environmental regulations aimed at reducing ozone depletion. While HFC-143a and HFC-123a are alternatives, they did not replace CFC-12 specifically in MVAC systems. HFC-134a is noted for its lower global warming potential compared to its predecessors. ;

Answered by GinnyAnswer | 2025-07-03

HFC-134a replaced CFC-12 in all mobile vehicle air conditioning systems due to environmental regulations focused on reducing ozone depletion. This shift began following the Montreal Protocol in the late 1980s and was implemented widely by the mid-1990s. Thus, the correct answer is B - CFC-12.
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Answered by Anonymous | 2025-07-16

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