Chemistry Lab Questions Please help AS SOON AS POSSIBLE Please !!?

Posted on 2014-12-03 06:35:00 in Chemistry by PETO

Mass of empty beaker=49.193 g
Mass of beaker and unknown= 49.382 g
Mass of unknown= 0.189g
Moles of unknown assuming it is sodium carbonate = 0.001783 mole
Moles of unknown assuming it is hydrogen carbonate = 0.00225 mole
Mass of beaker and sodium carbonate= 49.378 g
Mass of sodium chloride= 0.185 g
Moles of sodium chloride = 0.003165 mole

1) Calculate the predicted yield (in g) of NaCl assuming your unknown is sodium carbonate

2) calculate the predicted yield of NaCl (in g) assuming your unknown is sodium hydrogen carbonate

3) what is the most probable identity of your unknown

4) suppose your unknown had been a hydrated form of sodium hydrogen carbonate with the formula NaHCO3 . H2O . what would differ in your calculations? Could you still have distinguished from sodium carbonate? explain .

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