Give the hybridyzaion of Carboxylic carbon? sp sp^2 sp^3 sp^4 Give the bond angl

Question

Give the hybridyzaion of Carboxylic carbon? sp sp^2 sp^3 sp^4 Give the bond angle al the carbonyl carbon. 90 degree 104.5 degree 109.5 degree 120 degree Identity the compound with the lowest pK_a. Acetic acid Chloroacetic acid Dichloroacetic acid trichloroacetic acid Write down the product. Ethanoic acid Propanoic acid Butanoic acid Ethanal Propanal Write down the product. Ethanoic acid Propanoic acid Butanoic acid Butanoyl chloride Pentanoyl chloride Write down the product. Ethanoic acid Propanoic acid Butanoic acid Butanoyl chloride Pentanoyl chloride

Explanation / Answer

1. sp2 hybridisation, it involves mixing of the s orbital with 2 of the p orbitals, leaving 1 p orital unhybridised, the structure C=O corresponds the Carbon will have 1 double bond and two single bonds.

2. 120 °. trigonal planar angles of 120°(three sp2 orbitals to form bonds to the carbonyl oxygen, the -carbon, and a substituent)

3.d. trichloroacetic acid (pka 0.26)

the lowesst pka is the strong acid. the pka of order trichloroacetic acid (pka 0.26) dichloroacetic acid (pka 1.48),  chloroacetic acid (pka 2.87), acetic acid (pka 4.75)

4.a ethanoic acid.

Sodium dichromate is oxidizing agent. it converts alcohols to carbonyl groups(aldehydeor ketone) then over oxidation it will convert acids.

5. b propionic acid.

this is grignard reaction. alkyl megnsium halide reaction with carbondioxide it will produces acids.

6. b  propionic acid.

ethyl chloride reacts with sodium cyanide form as Propiononitrile. this on hydrolysis give propionic acid.

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