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(a)
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:
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:
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:
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 Solutions
Chemistry In Context
- What is the biological importance of stratospheric ozone? Explain.arrow_forwardName a favorable effect of the global increase of CO2 in the atmosphere.arrow_forward62 Ammonium dinitramide (ADN), NH4N(NO2)2, was considered as a possible replacement for aluminium chloride as the oxidizer in the solid fuel booster rockets used to launch the space shuttle. When detonated by a spark, AND rapidly decomposes to produce a gaseous mixture of N2,O2, and H2O. (This is not a combustion reaction. The ADN is the only reactant.) The reaction releases a lot of heat, so the gases are initially formed at high temperature and pressure. The thrust of the rocket results mainly from the expansion of this gas mixture. Suppose a 2.3-kg sample of ADN is denoted and decomposes completely to give N2,O2, and H2O. If the resulting gas mixture expands until it reaches a temperature of 100°C and a pressure of 1.00 atm, what volume will it occupy? Is your answer consistent with the proposed use of ADN as a rocket fuel?arrow_forward
- Explain the difference between the effects of ground- level ozone and stratospheric ozone. Why is one beneficial to human life, whereas the other is not?arrow_forwardCalcium carbide, CaC2, is manufactured by reducing lime with carbon at high temperature. (The carbide is used in turn to make acetylene, an industrially important organic chemical.) Is the reaction endothermic or exothermic?arrow_forward
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