Which is the stronger acid?

a. CH₃CH₃ or HC ≡CH

b. H₂C= CH₂or HC≡ CH

c. H₂C =CH₂ or CH₃CH₃

a. As we go down the group, the electron cloud becomes larger and there will be less attraction on proton. A proton can easily be removed so the acid will be stronger.

b. Hybridization = In (stronger acid hybridization follows the order sp>sp²>sp³)

c. values are as follows: protonated alcohols, protonated carboxylic acids, and protonated water < 0; carboxylic acids ~5; protonated amines ~10; alcohols and water ~15.

d.The strength of an acid is determined by the stability of its conjugate base.

e.When atoms are of similar size, the stronger acid is one that has its hydrogen attached with more electronegative element.

f. Electronegativity = sp>sp²>sp³

g.When atoms are of different size, the stronger acid is one that has hydrogen attached to the largest atom.

In sp hybridization, there is triple bond, and in sp³ hybridization, there is single bond. The stronger acid follows the order sp˃sp²˃sp³, so triple bond compound is a stronger acid.

In sp hybridization, there is triple bond, and in sp² hybridization there is double bond. The stronger acid follows the order sp˃sp²˃sp³,so triple bond compound is a stronger acid.

In sp² hybridization, there is a double bond, and in sp³ hybridization, there is single bond. A stronger acid follows the order sp˃sp²˃sp³, so double bond compound is a stronger acid.