Which of the following reagents would reduce carboxylic acids and esters int alc

Question

Which of the following reagents would reduce carboxylic acids and esters int alcohols 1.LiAlH_4/2.H_3O^+ H_2/Raney Ni Na/NH_3 1.NaBH_4/2.H_3O^+ zn(Hg)/H^+ In electrophilic aromatic substitution reactions a chlorine substituent: is a deactivator and a m-director. is an activator and an o, p -director. is a deactivator and an o,p-director. is an activator and a m-director. none of the above Buffering is used to maintain the pH of human blood in the relatively narrow 7.3 - 7.4 range. What acid/base pair serves to buffer the blood? NH_4^+/NH_3 H_2 CO_3/HCO_3^- H_3 O^+/H_2 O H_2 O/HO^- HCI/Cl^- What is the best method for carrying out the following reaction? I II III IV V

Explanation / Answer

24) A

25) C

26) B

27) C

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