Help with Stoich limiting reactant Lab

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SUMMARY

The discussion centers on a stoichiometry lab involving the reaction of Barium Chloride Dihydrate (BaCl2·2H2O) and Sodium Sulfate (Na2SO4) to produce Barium Sulfate (BaSO4) and Sodium Chloride (NaCl). The calculated moles for each reactant and product are 0.0019 mol, with the mass of BaSO4 being 0.4524 g, BaCl2 at 0.4641 g, and Na2SO4 at 0.2698 g. The limiting reactant identified is sulfate (SO4), with Barium (Ba) being the excess reactant. The participant seeks guidance on calculating the mass of the excess reactant.

PREREQUISITES
  • Understanding of stoichiometry and limiting reactants
  • Familiarity with chemical equations and mole calculations
  • Knowledge of mass-to-mole conversions
  • Basic laboratory skills in measuring and calculating chemical quantities
NEXT STEPS
  • Calculate the initial amounts of reactants based on the balanced chemical equation
  • Learn about stoichiometric calculations for excess reactants
  • Review the concept of precipitate formation in chemical reactions
  • Explore methods for determining the mass of excess reactants in lab experiments
USEFUL FOR

Chemistry students, laboratory technicians, and educators involved in teaching stoichiometry and chemical reactions will benefit from this discussion.

drkoverlord
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Help with Stoich limiting reactant Lab urgent!

1. I need to find the mass of the excess reactant. This was a lab i did. so its BaCl2.2H20 + Na2So4 --> BaSO4 + 2NaCL. The data i have calculated thus far is.

moles of BaSO4=0.0019 mol
moles of BaCl2=0.0019 mol
moles of Na2SO4=0.0019 mol

mass of BaSo4=.4524g
mass of BaCl2=.4641g
mass of Na2So4= .2698g

Mass of entire salt mixture=1.0038g

The limiting reactant is SO4 and excess is Ba.

BaSo4 is the precipitate.

How do i get the excess reactant!
 
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What are the initial amounts of the reactants? I don't quite understand what the numbers you gave are for.
 


As Bohrok wrote - you have failed to explain what the question is. What the lab, what you did, what are these numbers. We are not mind readers.

It may came usefull, but we are not.

--
methods
 

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