For the three solutions 0.1 M Ba(OH))2, 1 M Na_2CO_3, and 2 M HCl, Complete and

Question

For the three solutions 0.1 M Ba(OH))2, 1 M Na_2CO_3, and 2 M HCl, Complete and balance each double displacement reaction (include states). Determine whether each reaction will produce a precipitate (ppt), a gas (gas), heat (heat), or if there will be no observable reaction (nr), and write the correct abbreviation in the prediction matrix below.____Ba(OH)_2(aq)+_____Na_2CO_3(aq) rightarrow BaCO_3 + 2NaOH____Ba(OH)_2(aq)+_____HCl(aq) rightarrow BaCl_2 + 2 H_2O____HCl(aq) +____Na_2CO_3(aq) rightarrow CO_2 + H_2O + 2NaCl Assume that each of the three solutions, 0.1 M Ba(OH)_2, 1 M Na_2CO_3, and 2 M HCl, is placed in a bottle labeled either A, B, or C. Based on the results observed for the reactions, determine which solution is in which bottle.

Explanation / Answer

1. For the three reagents

a. Balanced equations

1. Ba(OH)2(aq) + Na2CO3(aq) ---> BaCO3(s) + 2NaOH(aq)

2. Ba(OH)2(aq) + 2HCl(aq) ---> BaCl2(aq) + 2H2O(l)

3. 2HCl(aq) + Na2CO3(aq) ---> CO2(g) + H2O(l) + 2NaCl(aq)

Prediction matrix

Na2CO3           HCl        

ppt                  no-ppt,heat             Ba(OH)2

-                    no-reaction,heat      Na2CO3

2. Based on the observation in the matrix,

A = 1M Na2CO3 + 2 M HCl

B = 0.1 M Ba(OH)2 + 2M HCl

C = 0.1 M Ba(OH)2 + 1 M Na2CO3

                      

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