Explanation has to be given for the observation- “A liquid gets cooler when it evaporates from an insulated container”. Concept introduction: The phenomenon of evaporation of liquid is transition from “ liquid phase ” to “ vapo r phase ”. Almost all the liquids have the tendency to evaporate either spontaneously at room temperature without the effect of “ external energy ” or in the presence of external energy like heat etc. Since evaporation occurs by the process of absorbing heat from the surroundings, it is an endothermic process. Insulation is a process in which there is no transfer of heat or any other form of energy from one body to the other or surroundings.
Explanation has to be given for the observation- “A liquid gets cooler when it evaporates from an insulated container”. Concept introduction: The phenomenon of evaporation of liquid is transition from “ liquid phase ” to “ vapo r phase ”. Almost all the liquids have the tendency to evaporate either spontaneously at room temperature without the effect of “ external energy ” or in the presence of external energy like heat etc. Since evaporation occurs by the process of absorbing heat from the surroundings, it is an endothermic process. Insulation is a process in which there is no transfer of heat or any other form of energy from one body to the other or surroundings.
Solution Summary: The author explains the phenomenon of evaporation of liquid, which occurs by absorbing heat from the surroundings, as an endothermic process.
Explanation has to be given for the observation- “A liquid gets cooler when it evaporates from an insulated container”.
Concept introduction:
The phenomenon of evaporation of liquid is transition from “liquid phase” to “vapo r phase”. Almost all the liquids have the tendency to evaporate either spontaneously at room temperature without the effect of “external energy” or in the presence of external energy like heat etc. Since evaporation occurs by the process of absorbing heat from the surroundings, it is an endothermic process.
Insulation is a process in which there is no transfer of heat or any other form of energy from one body to the other or surroundings.
What is the [OH⁻] of a 1.80 M solution of pyridine (C₅H₅N, Kb = 1.70 × 10⁻⁹)?
What is the percent ionization in a 0.260 M solution of formic acid (HCOOH) (Ka = 1.78 × 10⁻⁴)?
Determine the pH of solution of HC3H5O2 By constructing an ICE table writing the equilibrium constant expression, and using this information to determine the pH. The Ka of HC3H5O2 is 1.3 x 10-5
Chapter 9 Solutions
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