Which of the following pairs are keto-enol tautomers? Check all that apply. ☐ CH3CH2CH2 CH=CHOH ? ← HCCH2CH2CH2CH3 OH ? || CH3CH2CH2C=CHCH3 CH3CH2CH2 CCH2CH3 OH ? 0 CH3CHCH2CH3 + CH3CH2CH2CH=CHOH || CH3CHCH2CH3 ? ☐ ← CH3 CCH2 CH2CH3 ? CH3CH2CH=CHCH2OH + ← HCCH2 CH2 CH2 CH3 Submit Previous Answers Request Answer

Draw the alcohol used to produce each of the following ketones. Include all hydrogen atoms. 3-pentanone 2-pentanone Select Draw Rings More Erase Select Draw Rings More / |||||| C 0 H с 0 H H₂C H₂C G 3-hexanone Select Draw Rings More /||||||| C 0 H CH₂ Q2Q CH₂ H₂C What is wrong with these Erase CH₂ Erase Q2Q

Complete the mechanism for the keto-enol tautomerization shown using bonds, charges, nonbonding electron pairs, and curved arrows (forward reaction only). Step 1: enol form Draw curved arrows. Select Draw Templates More ||||||||| 3 Ć : 0 Step 3: complete the structure, then add curved arrows. Select Draw Templates More 3 Ć |||||| H ra Q2Q Q2Q The tautomer that predominates in aqueous solution is the O keto form. Oenol form. Step 2: Draw curved arrows. Select Draw Templates More "M 3 Ć H 3 Ć H step 4: keto form. Complete the structure. Select Draw Templates Mar ||||||| CMO Era Q2Q Q2Q

Determine whether each of the following molecules is a hemiacetal, acetal, or neither and select the appropriate box in the table. CH₂ CH₂ O C=0 CH2—0– HO CH3 CH₂ 0—CH2CH3 CH3 O OH X OH HỌ–ệo-CH2CH2CH3 Ⓒhemiacetal O acetal O neither Ohemiacetal O acetal O neither Ohemiacetal O acetal O neither Ohemiacetal O acetal neither X 5