Question

Between phenol and ethanol which is has a lower pk value

Answer 1

ɪɴ ᴘʜᴇɴᴏʟ, ᴛʜᴇ ʟᴏɴᴇ ᴘᴀɪʀ ᴏғ ᴏxʏɢᴇɴ ᴘᴀʀᴛɪᴄɪᴘᴀᴛᴇs ɪɴᴛᴏ ʀᴇsᴏɴᴀɴᴄᴇ ᴡɪᴛʜ ᴛʜᴇ ʙᴇɴᴢᴇɴᴇ ʀɪɴɢ.

... ᴡʜɪʟᴇ ɪɴ ᴇᴛʜᴀɴᴏʟ, ᴇᴛʜʏʟ ɢʀᴏᴜᴘ ʜᴀs ᴀ + ɪ ᴇғғᴇᴄᴛ ᴀɴᴅ ɪɴᴄʀᴇᴀsᴇs ᴛʜᴇ ᴇʟᴇᴄᴛʀᴏɴ ᴅᴇɴsɪᴛʏ ᴀʀᴏᴜɴᴅ ʜ ᴏғ ᴏ—ʜ ɢʀᴏᴜᴘ ᴍᴀᴋɪɴɢ ɪᴛ ᴅɪғғɪᴄᴜʟᴛ ᴛᴏ ʀᴇᴍᴏᴠᴇ ʜ ᴀs ʜ+. ʜᴇɴᴄᴇ, ᴘʜᴇɴᴏʟ ɪs ᴍᴏʀᴇ ᴀᴄɪᴅɪᴄ ᴛʜᴀɴ ᴇᴛʜᴀɴᴏʟ ᴀɴᴅ ʜᴀs ʟᴏᴡᴇʀ ᴘᴋᴀ ᴠᴀʟᴜᴇ ᴛʜᴀɴ ᴇᴛʜᴀɴᴏʟ.

Answer 2

Answer:

hii friend here is your answer

While in ethanol, ethyl group has a + I effect and increases the electron density around H of O—H group making it difficult to remove H as H+. Hence, phenol is more acidic than ethanol and has lower pKa value than ethanol.

Explanation:

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