CHEM LAB ESSAY

**************************************** ** *** compounds ** ******************* the **** of Calcium *** ** * **************** ***************** ** this ********** ** ******* tablet ********** ******* ********* ** ******** ******* ************ ********** to ********* *** actual ****** ** calcium ******* *** 5000-g ****** ** *** ******* ***** ** **** ******* **** ***** shows *** tablet has a *** % composition ** ******* Based ** *** ***** and ****** ** ******* ** *** ***** ********* ** ******* the *********** is used ** *********** with *** experimental findings to ******* the cost ** ***** of **** ** ** **** **** *** ******* performed *********** an **** * *** % error when ********* *** ************ ***** ** ******* ***** ** *** tablet ** *** theoretical amount ** one tablet ***** ** *** *********** label ** *** ******* containerIntroduction: *** ******** compound ** ******* ********* ******* ** commonly used as the **** ********** in **** ******* *********** *** ingestion ** calcium carbonate ****** *** ******** ** ******* *** recommended ***** ********* of ******* and acting ** ** ******* to neutralize stomach ******** ****** ***** ********** ********* contain several ***** ******** ingredients ***** **** *** **** ********** ** ******* ********* ************* companies **** typically use additional ********** ** ********* *** ******** ********** ** *** properties ** *** main ********** ****** **** **** ******** *********** *** added ** * product *** potency ** the **** ********** ********* *** *** ******** the ********** **** *** ******* ******* **** considering *** ********** ** ****** *** ** ****** on *** ***** ** its name *** ** ******* the labeled *********** *********** *** marketed products *** ******** ** *** US Food and **** ************** ** provide * ******** **** ** significant *********** ***** **** *** amount of **** *********** ***** ******* become available ** experimentally measuring **** ** *** ***** product produced *** ********* ** **** ********** ******** evaluating the actual ****** ** calcium ** ** antacid ****** ** *** labeled ***** ***** * ***** ** ******* ******** antacid one serving ** ********* ** *** 500-mg ******* **** claim ** **** a total 400-mg ** ******* ********* ** *********** *** ****** tablet ** ******** 200-mg ** the **** ********** ******* ********* **** shows *** ******** ** 300-mg ** inactive ingredients ** **** ****** Since the ******* ****** ******** **** ******** *********** **** ******* carbonate the ************* for *** ****** ** calcium **** be ********* ******* quantitative analysis Through * ****** of chemical changes *** ****** *** ******** *********** ** ** ******* ****** *** ** ********* *** ****** *** ** placed into ************ **** ******* the ******* ********* to ******** **** * ****** ********* ******** * ******** *** ********* * *** *** * ****** ** ************ **** ******** *** ******** *********** **** ******** * ***** *** *** *** ******** can ** separated **** the liquid ******** **** sodium ********* *** ** ***** to get *** of *** ****** hydrochloric **** **** **** *** ******** reaction; ******** + ********** *** ********* * CO2(g) * ******* and **** ***** *** ********* ** ******* ** ************* ** ******* carbonate; ********* + ********** *** ******** * ********* ** ******* ********** ** ********* *** then ******* *** ********* ******* *** ****** ********** ** calcium carbonate is ******** and the **** ** ******* for one antacid ****** can ** ***** *** ******** to *** ******* ******************** *** ********* ********* for **** experiment ******* ** the lab ******* ** ****** *** ** ********* ******* ***** * calcium-enriched ****** must first be obtained *** ************** **** the number of ******* found ** a ****** **** ** *** ****** *** the ****** ** **** *** *** tablet ****** ** *** ****** are then recorded The **** ** one ****** is ******** ** an analytical ******* *** after *********** **** * ****** ****** ***** ***** ** a 20M *** solution ** ** poured into *** beaker ********** *** ****** *** ****** ****** ** dissolve *** **** ******* can be *********** by breaking the ****** into ******* ****** with * ************ *** ** heating the ************* *** ****** *** ********* *** ****** solution ** ******* ******* ** into two **** ***** while ****** ** ***** *** ********* ****** ** *** beaker *** sample ****** ** rinsed with ** ********** **** ***** of *** *** and *** ****** are also transferred ** *** **** tubes The **** tubes are centrifuged for **** minutes *** afterwards *** *********** solution is ****** **** * ***** ****** ****** **** *** ***** remaining ** *** **** ***** ** ***** ** 20M HCl *** ***** *** ** ******** ********* 10 additional ***** are **** When ** **** ******* **** **** *** *** ***** are ***** *** mixtures *** centrifuged ***** *** the *********** ****** ********* ** poured into *** ****** ********** the other **************** 25-mL ** *** ****** *** *********** into the beaker ********** *** *********** ******** The mixture is ******* *** given **** ******* for the ***** ** *********** and ****** With * piece ** *** ****** ***** ** * ***** ***** *** **** ** the supernatant ******** ** placed ** ** ** the paper does *** **** **** **** **** ** the *** Na2CO3 ** ***** ** *** mixture If necessary ***** steps *** ******** ***** *** paper does **** blue **** ********* *** ******* is ****** ******** ***** ** filter ***** is obtained and *** mass *********** ** ** ** ***** With *** ****** ***** ** ** folded **** a **** placed on the ****** **** ** * funnel *** ********* **** ********* ***** The ****** ** positioned into a ****** ********** ***** The *********** ****** ** ****** **** *** beaker **** the ****** *** ********* ***** is **** to ********** ***** all the ******* ** ***** **** *** ****** ********* the ****** ***** containing the ***** ** transferred **** * ***** ***** *** ****** ** ** **** *** *** ******* ** dry ***** *** ****** ***** ********** the ******* ** ****** *** **** *********** of ** ** ***** The watch ***** ** placed **** in *** **** ****** a second **** for **** ******* *** **** ******** ***** ** the first *** ****** mass ************ ****** ** more **** ***** it ********* to ** ****** *** ******* ***** **** ********** no longer **************** *** **** *** calculations obtained from **** ********** are listed ** the following Table #1 on **** * *** **** measurement ** the ******** paper **** one ****** ** subtracted from *** **** ** the ******** ***** and ******** the mass of the tablet *** **** measurement ** *** filter ***** **** ***** ** ******** **** *** **** of *** ****** paper and **** ***** *** ***** **** ** ***** ***** ******* In *** first ****** *********** ** **** * *** final **** ** ***** after heating ** **** with *** ********** ******* ** *** ***** masses to find *** **** of Ca2+ *** ** the ****** In *** second ****** *********** ** **** * *** composition ** *** **** ** Ca2+ *** ** *** ****** relative to *** mass ** *** ******** ****** ***** the **** percent ** Ca2+ *** ** the tablet ** the ***** ****** *********** ** **** * the information gathered ** *** ********* ** antacid ******* ** **** ** **** *** **** ** ***** of **** *** ** *** ***** ****** calculation ** page 5 *** value ** *** theoretical **** ** **** *** ** *** ****** *** *** ************ **** ** **** *** in *** ****** *********** *** ******* error ** the ************ ******** of *** Ca2+ ion in *** *********** *** ************ **** from ********* a **************** ******************** ** **************** ********** **** ************* ** tablets ** bottle150Cost of the ****** of ******** ************** mass ** **** ion in *** ***************** ** weighing ***** plus **************** ** ******** *************** ** ****************** of ****** ***** **** ***** ***** ***** ***************** ** ****** ***** plus CaCO3 ***** second ***************** ** ****** *************** ** ***** ****** **** ****** ********************* ** **** *** ** ***************** percent ** **** *** ** tablet138 %Cost ** ***** ** Ca2+ *** ** ******** **** *** ***** ** *************** percent error ** ************ experimental ** Ca2+ *** ** tablet128 ***************************** Calculation *** **** ** Ca2+ *** ** ****** **** ***** ****** ** **** *** in tablet = ***** of isolated ****** ******** **** *** ******* (1001-g ***** ******** (0440-g CaCO3) ******** **** *** mol-1)/ (1001-g ***** ******** 0176-g ***** ******* ************ *********** *** Mass Percent ** **** *** ** ****** **** ***** ****** percent ** **** ion ** tablet = ****** ** Ca2+ *** in ******* * ***** ** ****** ********** * ******* [(0176-g **** **** / ******* ******* * ******* *** % Sample *********** for **** ** ***** ** **** ion ** Tablet **** Table ****** of 100-g ** **** ion ** ****** * [(cost of ********* ** ******** ******** of ******* in container)] ****** ** Ca2+ ion ** *** tablet)= [($ 699) * **** ********* / ******* Ca2+ ***** * *********** *********** for **** ******* ***** **** Table #1Mass percent ***** = [[(theoretical) * *************** * ********** * *** * *********** * ********** * (188)] x *** = 128 **************** The results ******** **** this ********** *********** the ******* to *** chemical ********* *** ********* to ******** * ********* **** a ****** Based on the solubility *** *** ********** ** *** ***** ****** ** ************ **** *** ******* ********* ********* **** * ****** *** *** ***** components ******** * solid Centrifuging this ******* ******* the ********** ** *** ***** components **** *** ****** solution *** calcium within the liquid solution ********* *** ************** ** *** solid ******* ********* by adding sodium ********* In ********** **** ******** *** ******** ** *** liquid *** ******* **** the ***** ******* of ******* ********* *********** **** ******** ********** any ****** ** ********* ****** *** ******** *** ****** of *** ******* carbonate ******* was **** ********** *** ********** ********* ******** *** **** ********** **** performed ** ***** with minimal ***** **** ******* *** ******** of *** hydrochloric **** **** the dissolved ****** * larger ****** *** **** **** **** *** ********* ****** *** **** * ****** ****** *** ******* area ** contact **** *** *** ***** increases and causes ** ** **** ** faster **** ** ***** with * smaller ****** ** this ******** *** beaker with the solution *** **** ** ** *********** **** **** ******** *** ****** *** * **** ***** **** *** ******* ** vapors when ****** *** **** removed a ***** ******* ** ******* **** the ******** *** caused the ************ ***** ** ******* ** *** ****** to ** ******** ******* Another small ***** ** ********** in ******** *** supernate ** calcium from the ******* ***** centrifuging ***** it ** relatively ********** ** ********* *** ** *** ********* ******* receiving **** ********* material it ** ******** the ************ ***** of ******* ***** ** *** completely ******************** *** experimental ***** ** ******* ** *** ******** tablet ** **** ******* ** *** *********** ***** ** ******* ** *** ****** given **** the ***** **** the amount ** calcium ** *** ***** ****** experimentally ***** ** ** ******* there ** *** * of ******* shown ** **** up one ****** ***** the ***** *** ****** of ******* ** *** ***** ********* of ******* the **** ** ***** of Ca2+ ** ********** ** ** $026 *** ******* **** ** ************** *********** *** ****** of ******* in *** tablet ******* ****** **** * *** * ***** **** compared ** the ******* ***** ** ******* **** the label **** ******* *** small *********** in value due to the *************** experimental ****** *** overall approach ** ******* the ******** ** a ********* ** a ****** ****** ** be successful  ******************* ** ML Gillette Separating and Determining *** Mass of ******* *** in * **************** ****** Modular ********** ******* ** ********* ******** ********* Resources: ******* ** **** ***** *** ****** ******* ** *** *************

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