benzoic acid and phenol are both solids that are insoluble in water. a mixture of the two compounds can be separated by adding a
1 answer:
The mixture of phenol and benzoic acid is separated by adding to produce brisk effervescence with sodium benzoate .
When benzoic acid react with then sodium benzoate is produced which is soluble in water and separated from non aqueous solvent . Organic compounds are soluble in organic solvent and inorganic compound mainly soluble in inorganic solvent like water.
What is brisk effervescence?
Brisk effervescence is when continuous gas evolution occurs in a chemical reaction like CO2. When HCl is added in then CO2 evolved.
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Answer: Option (b) is the correct answer.
Explanation:
In a chemical reaction, the bonds between the reactant molecules tend to break leading to the formation of new bonds to produce products.
So, in order to break the bonds between the reactant molecules, energy is required to overcome the attraction between the atoms.
To form new bonds, energy gets released when two atoms come closer to each other. Hence, formation of bond releases energy.
As in the given reaction it is shown that < 0, that is, enthalpy change is negative. Hence, energy is released as it is an exothermic process.
Thus, we can conclude that the statement energy released as the bonds in the reactants is broken is greater than the energy absorbed as the bonds in the products are formed, is true about the bond energies in this reaction.