Write balanced, net ionic equations for the following reactions that are similar
ID: 515367 • Letter: W
Question
Write balanced, net ionic equations for the following reactions that are similar to those that occur in this lab: a. Sodium chloride solution is mixed with silver nitrate solution. b. Copper (II) sulfate solution is mixed with potassium carbonate solution. c. Rubidium metal is added to pure water. An unknown solution contains either sodium chloride or sodium carbonate. Using only solutions you have access to in this lab, suggest a test to determine which compound the unknown solution contains. What do you expect would happen if you dropped a piece of calcium metal into the aqueous solution of calcium chloride used in this experiment?Explanation / Answer
1.(a)AgNO3(aq) + NaCl(aq) ---> AgCl(s) + NaNO3(aq)
AgCl precipitated out of solution because it's insoluble in water.
(b)CuSO4+K2CO3--->K2SO4+CuCO3
(c)Rubidium is a Group I metal and reacts with water in the same way as sodium and potassium:
2Ru(s) + 2H2O(l) --> 2RuOH + H2(g)
2.
The only tool we will be given is some litmus paper. By litmus paper we can identify the unknown solution.
NaCl is neutral salt( strong base +strong acid) and Na2CO3 (Strong base +weak acid) is basic salt.
Other then litmus paper we can identify the unknown solution by the following method:
Identify NaCl as unknown solution:
Add AgNO3 in the solution ,a white ppt. Will produce which is insoluble in water.
Identify Na2CO3 as unknown solution:
Add H2SO4 or HCl , fizzing is produce due to CO2.
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