1.

How are the following compounds obtained from calcium salts of fatty acids: (1) Formaldehyde (2) Acetaldehyde (3) Acetone?

Answer»

Solution :(1)l Formaldehyde: When calcium formate is strongly heated under dry conditions (dry DISTILLATION), formaldehyde (methanal) is obtained.
` underset("dry distillation")overset(DELTA)(to) underset("formaldehyde")(HCHO+CaCO_(3))`
(2) Acetaldehyde: When calcium acetate (calcium ethanoate) is heated with calcium formate (calcium methanoate) under dry condition, acetaldehyde (ethanal) is obtained.
`underset("dry distillastion")(Delta)(to) underset("acetaldehyde")(2LCH_(3)CHO+)2CaCO_(3)`
(3) Acetone: When calcium acetate (calcium ethanoate) is strongly heated under dry condition, acetone (PROPANONE) is obtained.
`underset("dry distillation")overset("heat")(to)underset("acetone")(CH_(3)COCH_(3))+CaCO_(3)`


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