Since the electronegativities of each indicated carbon is different, what effect

Question

Since the electronegativities of each indicated carbon is different, what effect does this have on the strength of the carbon-hydrogen bond? Also, what effect does this have on the acidity of the molecule? Molecule C has the weakest C-H bond due to electronegativity which results in the most acidic molecule Molecule C has the strongest C-H bond due to electronegativity which result in the most acidic molecule Molecule C has the strongest C-H bond due to electronegativity which result in the least acidic molecule Molecule A has the strongest C-H bond due to electronegativity which results in the most acidic molecule Molecule A has the weakest C-H bond due to electronegativity which results in the most acidic molecule Molecule B has the strongest C-H bond due to electronegativity which results in the least acidic molecule

Explanation / Answer

Option A.

Acetylene is most acidic amongst these three hydrocarbons. In Acetylene, C atoms are SP hybridized (S character 50%), in ethylene, C atoms are SP2 hybridized (S character 33.3%) an din methane C atom is SP3 hybridized (S character 25%).

Higher the S character, electro negativity will be higher and thus the acidity.

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