Source: https://www.researchgate.net/profile/Talaat-El-Emary/post/Is_there_a_published_experimentally_determined_value_for_the_O-H_bond_length_in_a_carboxylic_acid_in_solution/attachment/59d62f0679197b807798d2fe/AS%3A356519343345665%401462012243765/download/chapter-4-carboxylic-acids-%281%29.pdf