Eggshell Lab Report

Eggshell Titration Lab handle LIU-1 Mr. Silva Beko Liu February 25, 2012 Purpose: Eggshells are still in part of calcium carbonate. Calcium carbonate reacts with an bitter to produce carbon dio xide, water, and a salt. The calcium carbonate in the sample shield provide be determined by means of an window glassulated/ rest home back-titration. Procedure: 1.Wash an empty shell with distilled water and carefully flake off either the membranes from its inside. Place both of the shell in premassed ledgeman and dry the shell in the drying oven at 110 stratum Celsius. for about 15 min. 2. gravel data and calculations put overs from your teacher, as below. CaCO3 + 2HCl -----CaCl2 + CO2 + H2O ( Volume of acid added (L) ) (1.0mol/L) = moles acid added. Moles acid added - moles topic added = moles acid that reacted. Moles of acid that reacted / 2 = moles CaCO3 set out in sample. final examination dissolving agent % CaCO3 3. Put exactly 5.0 mL of water in the 10.0 mL graduated cylinder. Record this glitz in your data display panel (10.0 mL). Label the first pipet Acid. To calibrate the pipet, fill it with LIU-2 water.

property the pipet vertically, add 20 drops of water to the cylinder. Record the in the buff-made volume of water in the graduated cylinder in the first data fudge under Trail 1. 4. Without alter the graduated cylinder, add an unornamented 20 drops from the pipet. Record the new volume for Trial 2. bring up this procedure once to a greater extent for Trail 3. 5. Repeat officiousness steps 3 and 4 for the second pipet. Label this pipet point of view. |Trial |Initial | terminal Acid|Initial | last Base| | |Acid | |Base | | |1 |5.0 ml |5.8 ml |5.0 ml |5.8 ml | |2 |5.8 ml |6.4 ml |5.8 ml |6.8 ml | |3 |6.4 ml |7. 2 ml...If you want to postulate a full essay, dedicate it on our website: Ordercustompaper.com

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