Nam e: J um oke P ari sh Dat e: De cem ber 20, 2013 C AP E C hem i st r y Un i t 1 Ex peri m ent Ai m : t o i nvest i gat e l i gand ex chan ge re a ct i ons (copper ) Apparat us: t est t ube s, t est rack, h ydr at e d copper ( II) sul pha t e, concent r at ed h ydro chl ori c a ci d, c oncent rat ed am m oni um h ydrox i de sol ut i on, di st i l l ed wat er M et hod: 5gr am s of h ydrat ed copper ( II) sul phat e was di ssol ved and a sm al l am ount was poured i nt o t wo t est t ubes. The con cent rat ed am m oni um h ydrox i de s ol ut i on was added drop b y d rop unt i l t here w as no furt he r chan ge. Al l obs ervat i ons wer e r ecorded . To t he sec ond t est t ube, conce nt rat ed h ydro chl ori c a ci d w as added drop b y d r op unt i l t here was n o furt her ch an ge. Al l obs ervat i ons we re re corded. Obs ervat i on C hem i cal added concent r at ed am m on i um h ydrox i de sol ut i on Observat i on C ol our chan ged f ro m l i ght bl ue t o bl ue t o dark bl ue concent r at ed 12 C ol our chan ged f ro m h ydro chl ori c a ci d l i ght bl ue t o l i ght gr een TAB LE S HOW ING THE OBS ER VAT IO N R EC OR DED FOR 12 DR OP S Di s cus s i on A Li gan d i s a neut ra l m ol ecul e or ani on wi t h a l one pai r of e l ect rons whi ch can be d enot ed i nt o t he em pt y d orbi t al s of t he cent r al t ransi t i on m et al i on. A C om pl ex i on consi st s of a cent ral t r an si t i on m et al i on surrounded b y m ol ecul es or l i gand s Li gand Ex chan ge i s when (st ron ge r) l i ga nds di spl ace (w eake r) l i gands from a com pl ex Num ber of drops 12