1. if you had used 1.30 Kearns of barium chloride instead of calcium chloride, a
ID: 909884 • Letter: 1
Question
1. if you had used 1.30 Kearns of barium chloride instead of calcium chloride, and 1.20 grams of the Na2CO3, what would he the theoretical yield of barium carbonate? (Write and balance the equation, determine the limiting reactant, and maximum yield.) 2 a) Would there be any effect on the amount of precipitate in the experiment if tap water containing calcium ions is used instead of deionized water, to dissolve the reactants Assume that Na2CO3 is present in excess. Explain your answer. b) What would happen if Na2CO3 were not in excess but rather was the limiting reactant? Would there be any effect on the amount of precipitate of Na2CO3 if tap water containing Ca^2+ were used? Explain your answer.Explanation / Answer
BaCl2 + Na2CO3 ----> BaCO3 + 2 NaCl.
No of mol of BaCl2 = 1.3/208.2330 = 0.00624 mol
No of mol of Na2CO3 = 1.2/106 = 0.011 mol
limiting reagent is BaCl2
No of mol of BaCO3 = 0.00624 mol
mass of BaCO3 = 0.00624*197.3359 = 1.23 grams
Theoretical yield of BaCO3 = 1.23 grams.
2) No effect will be on precipitation.because Na2co3 is excess.
3) if Na2co3 is not excess then the amount of precipitate will be reduced.
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