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Pre-lab Questions

1. Complete the three reactions shown below that are taking place throughout this experiment.

      Li2CO3 +       H3C6H5O7 →      

      Na2CO3 +       H3C6H5O7 →      

      K2CO3 +       H3C6H5O7 →      

2. Calculate the molecular weights of Na2CO3 and K2CO3. (See the Introduction for the Li2CO3 example.)

a. Na2CO3 :

     

b. K2CO3 :

     

3. Calculate how many grams of Na2CO3 and K2CO3 you will need to weigh out to have 0.0250 mol of each of the substances. (See the Introduction for the Li2CO3 example.)

a. Na2CO3 :

     

b. K2CO3 :

     
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