Question

how will you obtined butan-2-ol from butan-2-on

Answer 1

You want Butan-2-one turned into Butan-2-ol, right?  

Add:

• LiAlH4
• H3O

This will reduce the ketone substituent to an alcoho

So,

LiAIH4 (LAH, is an inorganic compound with the chemical formula LiAlH4) + H3O (Hydronium ion ) = butan-2-one.