Give the product expected, if any, when 1-butanol (or other compound indicated) reacts with each of the following reagents.

(a) Concentrated aqueous HBr, H₂SO₄ catalyst, heat 

(b) Cold aqueous H₂SO₄

(c) Pyridinium chlorochromate (PCC) in CH₂Cl₂

(d) NaH

(e) Product of part (d) + CH₃I in DMSO

(f) P-toluenesulfonyl chloride in pyridine

(g) PrMgBr in anhydrous ether

(h) SOCl₂ in pyridine

(i) Ph₃PBr₂ in DMF

(j) Product of part (a) + Mg in dry ether

(k) Product of part (f) + K⁺ (CH₃)₃C—O– in (CH₃)₃COH

(l) Triflic anhydride and pyridine

(m) Product of (l) followed by anhydrous K⁺ F^– in acetonitrile