Eggshell Lab Report

Eggshell Titration Lab musical composition LIU-1 Mr. Silva Beko Liu February 25, 2012 Purpose: Eggshells are coolheaded in part of atomic number 20 carbonate. Calcium carbonate reacts with an deadlyulated to produce carbon dio xide, water, and a salt. The calcium carbonate in the sample shield lead be determined by means of an acidulated/ stem back-titration. Procedure: 1.Wash an empty eggshell with distilled water and carefully flake either the membranes from its inside. Place any of the shell in premassed breakers and dry the shell in the drying oven at 110 stop Celsius. for about 15 min. 2. modeling 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 grounding added = moles acid that reacted. Moles of acid that reacted / 2 = moles CaCO3 set out in sample. final examination reaction % CaCO3 3. Put exactly 5.0 mL of water in the 10.0 mL graduated cylinder. Record this tawdriness in your data duck (10.0 mL). Label the first pipet Acid. To calibrate the pipet, fill it with LIU-2 water.

safekeeping the pipet vertically, add 20 drops of water to the cylinder. Record the raw volume of water in the graduated cylinder in the first data submit under Trail 1. 4. Without elimination the graduated cylinder, add an superfluous 20 drops from the pipet. Record the newfangled volume for Trial 2. protract this procedure once much for Trail 3. 5. Repeat avidness steps 3 and 4 for the second pipet. Label this pipet group. |Trial |Initial | final examination Acid|Initial | concluding 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 read a full essay, launch it on our website: Ordercustompaper.com

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