1-Butanol
The compound ch3ch2ch2ch2ch2ch2ch2oh is the most polar because it has the longest carbon chain with an -OH group, which increases its polarity due to hydrogen bonding. Shorter chains like ch3ch2ch2ch2oh and ch3oh are less polar as they have shorter hydrocarbon chains.
"Alcohols, ethers and epoxides having less than or 5 carbon atoms are water soluble because they each have an oxygen atom capable of hydrogen bonding." "Alcohols, ethers and epoxides having more than 5 carbon atoms are insoluble because the non-polar alkyl portion is too large to dissolve in water" Source: Organic chemistry (second edition) by Janice Gorzynski Smith
The compound ch3ch2ch2ch2ch2ch2ch2oh is the most polar because it has the longest carbon chain with an -OH group, which increases its polarity due to hydrogen bonding. Shorter chains like ch3ch2ch2ch2oh and ch3oh are less polar as they have shorter hydrocarbon chains.
"Alcohols, ethers and epoxides having less than or 5 carbon atoms are water soluble because they each have an oxygen atom capable of hydrogen bonding." "Alcohols, ethers and epoxides having more than 5 carbon atoms are insoluble because the non-polar alkyl portion is too large to dissolve in water" Source: Organic chemistry (second edition) by Janice Gorzynski Smith