From the given possible replacement for CFCs are HFC-152a and HFC-23, the one which appears to be the better replacement has to be determined by considering only GWP. Concept introduction: Global warming is a serious environmental issue, in which there is an increase in the overall temperature of the earth by various factors. Greenhouse gases are one type of gas which traps the heat within the system and thus it increases the overall temperature of the earth resulting global warming . Examples: C O 2 , C H 4 .. The ability of a trace gas to cause global warming is described by its Global warming potential (GWP) and it is related to the lifetime of a gas in the atmosphere as well as the ability of a gas to absorb IR radiation. The lifetime of a gas in the atmosphere and its ability of a gas to absorb IR radiation are the two properties which are included in the calculation of the global warming potential

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Chapter 4, Problem 45Q

(a)

Interpretation Introduction

Interpretation:

From the given possible replacement for CFCs are HFC-152a and HFC-23, the one which appears to be the better replacement has to be determined by considering only GWP.

Concept introduction:

Global warming is a serious environmental issue, in which there is an increase in the overall temperature of the earth by various factors.

Greenhouse gases are one type of gas which traps the heat within the system and thus it increases the overall temperature of the earth resulting global warming.

Examples: CO2,CH4..

The ability of a trace gas to cause global warming is described by its Global warming potential (GWP) and it is related to the lifetime of a gas in the atmosphere as well as the ability of a gas to absorb IR radiation.

The lifetime of a gas in the atmosphere and its ability of a gas to absorb IR radiation are the two properties which are included in the calculation of the global warming potential

(b)

Interpretation Introduction

Interpretation:

The considerations which are used to choose a better replacement for CFC has to be provided.

Concept introduction:

Global warming is a serious environmental issue, in which there is an increase in the overall temperature of the earth by various factors.

Greenhouse gases are one type of gas which traps the heat within the system and thus it increases the overall temperature of the earth resulting global warming.

Examples: CO2,CH4..

The ability of a trace gas to cause global warming is described by its Global warming potential (GWP) and it is related to the lifetime of a gas in the atmosphere as well as the ability of a gas to absorb IR radiation.

The lifetime of a gas in the atmosphere and its ability of a gas to absorb IR radiation are the two properties which are included in the calculation of the global warming potential

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