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August 2, 2015

Homework Help: Chemistry lab

Posted by Tara on Monday, November 5, 2012 at 3:26pm.

I have spent the last 6 hours trying to figure this out and have talked to my teacher and apparently i canoot get it right as i have to explain sulfate ions other things i dont understand (never took chem before)

questions i need help with
Na2so4 .05mol/l are reacted with cacl2 (.0125,0.05, 0.075, 0.10 mol/l)

in trails 2-4 parcipitate does not change.

Describe would would ocur when the products of these trails are tested.

Explain why the mass of percipate did not differ in the last three trails.

How would this support the concept of an equilibrium system having a forward and reverse reaction.

please help i have come up with answers but they are not what my teacher is looking for.

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