Which fatty acid has the lowest melting point?Multiple ChoiceCH3(CH2)5CH=CH(CH2)7COOHCH3(CH2)16COOHCH3(CH2)4CH=CHCH2CH=CH(CH2)7COOHCH3(CH2)24COOHCH3CH2CH=CHCH2CH=CHCH2CH=CH(CH2)7COOH
Question
Which fatty acid has the lowest melting point?Multiple ChoiceCH3(CH2)5CH=CH(CH2)7COOHCH3(CH2)16COOHCH3(CH2)4CH=CHCH2CH=CH(CH2)7COOHCH3(CH2)24COOHCH3CH2CH=CHCH2CH=CHCH2CH=CH(CH2)7COOH
Solution
The fatty acid with the lowest melting point would be the one with the most double bonds. This is because double bonds introduce kinks into the fatty acid chain, preventing them from packing together tightly and thus lowering the melting point.
From the options given, the fatty acid with the most double bonds is CH3CH2CH=CHCH2CH=CHCH2CH=CH(CH2)7COOH. Therefore, this fatty acid would have the lowest melting point.
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