Project_1a - Project 1: The Identification of an Unknown...

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Project 1: The Identification of an Unknown Alkali Carbonate Introduction The purpose of this experiment is to identify the unknown cation metal from an unknown alkali carbonate given through empirical and molar calculation. Summary of experimental method used for this experiment: First, measure about 1g of the unknown alkali metal and put it into a 25ml beaker (1). Then, measure about 10g of concentrated (conc.) HCl and put it into another 25ml beaker (2). Next, pour the conc. HCl from beaker (2) slowly into the 1 st beaker containing 1g of unknown alkali metal carbonate. Ensure that the reaction is complete by adding excess conc. HCl till no further reaction can be observed. Calculate the lost of the mass of the 2 reactants by subtracting the sum of initial weight of HCl and unknown alkali metal with the final weight of the product . That will be the CO 2 gas produced. From the given information, using the molar rule and the equation of the experiment, we are able to find the molar mass of the unknown alkali metal. (M 2 CO 3 +2HCl 2MCl+CO 2 +H 2 O) Experimental Steps 1) Measure and record the mass of the 25ml beaker (1). 2) Measure and add about 1g of M
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This note was uploaded on 10/16/2011 for the course CHM 151 taught by Professor Yiguo during the Fall '09 term at Chandler-Gilbert Community College.

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Project_1a - Project 1: The Identification of an Unknown...

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