When removing the solvent from your product, it is stated that when the flask no

Question

When removing the solvent from your product, it is stated that when the flask no longer felt cool. the evaporation process was complete. Why does the flask feel cool while evaporation occurs but not when evaporation is complete? 2pts . Triglycerides undergo saponification reactions to form glycerol and fatty acid salts. The reaction compounds have different solubility. Write H,O below structure(s) expected to be more soluble in water and DCM under those more soluble in dichloromethane . 3 pts NaOH Fatty acid salt Glycerol Triglyceride Deuterium is an isotope of hydrogen with symbol D. It exists as a diatomic gas D, and behaves like hydrogen gas. Taking into account the mechanism of hydrogenation add hydrogen (H) and deuterium (D) to depict the chair conformer of the product formed from the reaction of cyclohexene with D, in the presence of Pd/C 2 pts Today's reaction is an example of heterogeneous catalysis. 2 pts What is the difference between homogeneous and heterogeneous catalysis? a. b. How would you classify the following catalytic processes? (circle) Catalytic converter in automotive exhaust system: Homogeneous or Heterogeneous .Phosphoric acid in dehydration of 2-methylcyclohexanol: Homogeneous or Heterogeneous

Explanation / Answer

evaporation process required latent heat from the hot solution. As a result the temperature of the hot flask decreases and it become cool. But when the evaporation process is completed, no further amount of heat as a latent is required and there will be no change in further temperature.

triglycerides: soluble in DCM as it is non-polar. water is polar solvent. therefore, it will be soluble in non-polar solvent.

glycerol is soluble in water as it contains three hydroxyle groups whic are favorable in hhydrogen bondings with water.

fatty acids are soluble in DCM but soluble in water ar high temperature.

homogeneous catalysis: all the reactants and catalyst are in same physical state.

heterogenous catalysis: all the reactants and catalyst are in not in same physical state.

catalytic converyer: heterogenous catalysis as gas (CO) passes on solid paladium catalyst.

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