Lithium diisopropylamide (lda) is used as a strong base in organic synthesis. lda is itself prepared by an acid-base reaction between butyllithium and n, n-diisopropylamine, [(ch3)2ch]2nh. write an equation for this reaction, and place the appropriate labels on each reagent and product from the following list: stronger acid, stronger base, weaker acid, weaker base.