Question

Calcium acetate on heating gives the compound with formula:
(A) $C{{H}_{3}}COC{{H}_{3}}$
(B) $C{{H}_{3}}COOH$
(C) $C{{H}_{3}}OH$
(D) $C{{H}_{3}}COOC{{H}_{3}}$

Answer 1

Hint: When calcium acetate is provided heat, it gives two products, one of those products on further heating goes through a condensation reaction with hydroxylamine and as a result it forms acetoxime.

Complete step by step solution:

• Calcium acetate is a calcium salt of acetic acid with the formula Ca(C2H3O2)2. Its standard name is calcium acetate, while its systematic name is calcium ethanoate. An older name is acetate of lime. The anhydrous form is very hygroscopic; therefore, the monohydrate is the common form.
• Calcium acetate can be prepared by soaking calcium carbonate or hydrated lime in vinegar.
  $CaC{{O}_{3}}+2C{{H}_{3}}COOH\to Ca{{(C{{H}_{3}}COO)}_{2}}+{{H}_{2}}O+C{{O}_{2}}$
• When we dry distillate the calcium salts of carboxylic acids it gives aldehydes or ketones.
  When calcium acetate Ca(C2H3O2)2 is heated, acetone and calcium carbonate is obtained
  $Ca{{(C{{H}_{3}}COO)}_{2}}\to C{{H}_{3}}COC{{H}_{3}}+CaC{{O}_{3}}$
  The process is the way to produce acetone, with the heat being slow and no codification being allowed. As calcium acetate is inexpensive, it was once a common starting material for the synthesis of acetone before the development of the cumene process.
  So, the correct option is (a).
• Calcium acetate is used to control high blood levels of phosphorus in people with kidney disease who are on dialysis.

Note: When we dry distillate calcium acetate it gives Acetone. Calcium formate on dry distillation gives Formaldehyde and a mixture of calcium formate and calcium acetate on dry distillation gives Acetaldehyde.