Answer:
The product of the reaction between a ketone and an alcohol is initially a hemiketal which yields a ketal on further reaction with another alcohol molecule.
The structure is found in the attachment.
Explanation:
This reaction is a <em>nucleophilic addition to the carbonyl group</em>. In organic chemistry, <em>a nucleophilic addition reaction is an addition reaction where a chemical compound with an electron-deficient or </em><em>electrophilic</em><em> double or triple bond, a pi (π) bond, reacts with electron-rich reactant, termed a </em><em>nucleophile</em><em>, with the elimination of the double bond and creation of two new single, or sigma (σ), bonds.</em>
In the reaction between a ketone and an alcohol, the <em>carbonyl</em> group of the ketone serves as the <em>electrophile</em> while the <em>hydroxyl</em> group of the alcohol is the <em>nucleophile</em>. The first product is known as a hemiketal because a single alcohol group has been aded to the carbonyl group of the ketone. Further nucleophilic additon of an alcohol group initiated by the presence of an acid e.g hydrochloric acid, results in the formation of a ketal which has two alcohol group added to the original ketone.
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Explanation:
Answer:
The enthalpy change in the the reaction is -47.014 kJ/mol.
Explanation:
Volume of water in calorimeter = 22.0 mL
Density of water = 1.00 g/mL
Mass of the water in calorimeter = m
Mass of substance X = 2.50 g
Mass of the solution = M = 2.50 g + 22 g = 24.50 g
Heat released during the reaction be Q
Change in temperature =ΔT = 28.0°C - 14.0°C = 14.0°C
Specific heat of the solution is equal to that of water :
c = 4.18J/(g°C)
Heat released during the reaction is equal to the heat absorbed by the water or solution.
Heat released during the reaction =-1.433 kJ
Moles of substance X=
The enthalpy change, ΔH, for this reaction per mole of X: