when do you use williamson ether synthesis and how would you solve an reaction doing so?

Please help me I am very confused, there are two parts to this question

How to synthesize from left to right?

Explain why furan is primary substituted at the 2 positive when it undergoes reaction. E* E an EAS

3. Propose a stepwise mechanism for the reaction below. Construct an accurate energy diagram. LICN CN

Rank the following groups in order of basicity, nucleophilicity, and leaving group ability. a. Rank the groups from most basic to least. ○ H₂S > H₂O > NH3 H₂S > NH₂> H₂O O NH₂ > H₂S > H₂O NH₂ > H₂O > H₁₂S c. Rank the groups from best leaving group to worst. O H₂S > NH3 > H₂O 2 H₂S > H₂O > NH3 NH₂ > H₂S > H₂O ○ NH₂> H₂O > H₂S 3 b. Rank the groups from best nucleophile to worst. ○ NH₂> H₂S > H₂O NH₂> H₂O > H₂S O H₂S> H₂O > NH₂ ○ H₂S > NH3 > H₂O

Draw the full electron pushing mechanism for the reaction depicted including ALL intermediates (with lone pairs and formal charges). Clearly label the electrophile and nucleophile in each step where appropriate.

Part a) Draw H. Part b) Arrow pushing mechanism from Cyclohexanone to H. Then arrow pushing from H to the product on far right.

OChem question regarding acidity Consider ONLY the hydrogen drawn in each compound, list the compounds in order of INCREASING acidity. Also, explain why the most acidic is considered the most acidic and why the least acidic is considered least acidic. Thank you!

What reagents can I use to end with this product?