Name: Mas, Mylyn L.
Date Submitted: 10/22/16
Pharm Chem 13 Se!ti"n: P#6
Date Per$"rmed: 10/1%/16
&'(eriment N". % )"d"metry *ssay "$ Cu(ri! Sul$ate Sul$ate ). D*+* *ND &S-L+S *. "lume/ei "lume/eihin hin Measurements Measurements Sam(le 1: Cu(ri! Sul$ate anhydr"us eiht: +rial 1: 0.26 +rial 2: 0.211 4. +itrati"n Data "lume "$ +itrant -sed: Volume Reading
Trial 1
Trial 2
Blank
Initial Reading
0.00 mL
0.00 mL
0.00 mL
Final Reading
2%. mL
2%.60 mL
0.00 mL
Total Volume Used
2%. mL
2%.60 mL
0.00 mL
"lumetri! S"luti"n -sed: 0.1 N S"dium +hi"sul$ate S N$: 1.0136 Calculated % Purity of Cupric ulfate! Trial 1: 1: .25 Trial 2: 2: 6.3 "#erage! .52 "#erage! .52 *!!e(tan!e !riteria: 75. 8100. Sam(le: $I$ &T P" &FFICI"' R()UIR(*(T % $e#iation Bet+een Trials:1.%35 Trials :1.%35 )). D)SC-SS)9N
% $e#iation Bet+een &R:23.7%0 &R :23.7%0
Cu(ri! sul$ate (entahydrate as b"uht and nely "(ened $"r assay e'(eriments "n 9!t"ber 10, 2016. )t as st"red in a tihtly sealed hite (lasti! !"ntainer. Cu(ri! sul$ate (entahydrate sam(le as !"m("sed "$ blue $ine !rystals hi!h turned t" hite8bluish ranules a$ter heatin t" 10 ;C $"r 2 h"urs. )t as st"red in the dessi!at"r a$ter heatin t" !"nstant eiht 2 days (ri"r t" assay. +" titrati"n trials $"r the assay "$ !u(ri! sul$ate ith 0.1 N s"dium thi"sul$ate S as the titrant ere (er$"rmed. +he $irst trial ith a !al!ulated (urity "$ .25 as !l"udy hite ith $"rmati"n "$ hite (re!i(itate at the b"tt"m "$ the s"luti"n. +he se!"nd trial sh"ed the m"re e
uired. * deuired are "$ hih (re!isi"n sin!e the (er!ent deuired as .52, hi!h means that the (r"du!t did n"t (ass the "$$i!ial re>uirement !"n$erred by the -SP. 9ne m"di$i!ati"n as d"ne in the beinnin "$ the assay e'(eriment. *!!"rdin t" the (r"!edure, the sam(le sh"uld be dried t" !"nstant eiht at a tem(erature "$ 20;C $"r 2 h"urs then dried t" dessi!at"r. #"e
titrant sin!e the s(e!i$i! end("int !"l"r stays the same it d"es n"t et dar=er t" indi!ate "
))). C9NCL-S)9N *ND &C9MM&ND*+)9NS 4ased "n the results a!>uired, it !an be !"n!luded that the Cu(ri! Sul$ate Pentahydrate Sam(le used did n"t (ass the 9$$i!ial e>uirement "$ the -SP sin!e the Purity a!>uired is n"t !"
