Chemical Engineering Thermodynamics
In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is

Unpredictable; depends on the particular reaction
Same
Less
More

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Chemical Engineering Thermodynamics
Which of the following is an undesirable characteristics of a refrigerant ?

Its vapor pressure at the condenser temperature should be very high
None of these
It should be non-explosive
It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils

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