A weighted amount of NaCl is completely dissolved in measured Vol of 4.00 M NH3 solution at ice temp, and CO2 is bubbled in. Assume that NaHCO3 is formed until the limiting reagent is entirely used up. The solubility of NaHCO3 in water at ice temp is 0.75 mol/L.
Also assume that all the NaHCO3 precipitated is collected and converted quantitatively to Na2CO3. [blue][/blue]
GIVEN:
Mass of NaCl : 14.7 g
Vol of NH3 : 39.9 ml
Solved myself and correct
moles of Nacl : 0.251
moles of NH3: 0.160 [green][/green] Questions:
1 / What is the theoretical yield of NaHCO3 in grams?
2 / How many grams of NaHCO3 formed will precipitated from the above Vol of solution?
3 / How many grams of Na2CO3 will be produced from this precipitate?
Also what is limiting reagent? NH3 or NaCl. [red][/red] Please help me out on these I could answer first 3 question but then I'm stuck on these , I don't get it.
Thank you already
|
