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Practice each question, then open the answer or worked solution.
(a) Write the formula and draw the electron dot structure of carbon tetrachloride.
(b) What is saponification? Write the reaction involved in this process.
CH3COOC2H5+NaOH CH3COONa+C2H5OH
Esters are sweet-smelling substances and are used in making perfumes. Suggest some activity and the reaction involved in the preparation of an ester with well-labelled diagram.
In a test- tube take 1ml ethanol and 1 ml glacial acetic acid and add few drops of concentrated H2SO4. Warm the test tube for 5 minutes over a water bath. Transfer the content in a beaker. Sweet smell confirms the formation of Ester.
CH3COOH+ CH3CH2OH Acid CH3COCH2CH3
O
(Ester)
A compound C (molecular formula, C2H4O2 ) reacts with Na – metal to form a compound R and evolves a gas which burns with a pop sound. Compound C on treatment with an alcohol A in presence of an acid forms a sweet-smelling compound S (molecular formula, C3H6O2 ). On addition of NaOH to C, it also gives R and water. S on treatment with NaOH solution gives back R and A. Identify C, R, A, S and write down the reactions involved.
Solution coming soon.