4. Provide the product/reagent in the following reactions. NO mechanism are to be given, just the products. a. 2.H3O+1.CH3CH2MgBr b. c. 1. PBr3 2. CH3=C: d. e. f. 3. H2 /Lindlar's cat. 3. H2 /Lindlar's cat. 4. H2SO/H2O draw 1 of 2 products g. 3. H2 /Lindlar's cat. 4. H2SO4/H2O 5. PCC h. draw 1 of 2 products draw 1 of 2 products hint: problem 1. L/J