Question

EXPERIMENT DATA A) Mass of empty and clean crucible 43,2001 B) Mass of the crucible and sodium bicarbonate SGOD C) Mass of sodium bicarbonate used in the experiment (D-A) experiment (BA) 5.3599 D) Moles of sodium bicarbonate used in the experiment E) Mass of crucible and decomposition product after heating 4 .1501 F) Mass of decomposition product (EA) "SO. DATA ANALYSIS AND POSTLAB QUESTIONS 1) Using the moles of sodium bicarbonate actually used in the experiment, calculate the theoretical yield of products from each of the possible decomposition reaction.

Answer 1

Two decomposition products are possible. Sodium carbonate and sodium oxide.

We calculated the theoretical yields of both products . But in case of sodium oxide , theoretical yield comes less than the experiment yield = 2.95 g . This is not possible.

It means only one product is formed . It is sodium carbonate.
A Mass of Empty and clean Gucible :- 43.2001 g - B mass of Cancible and sodium Bicarbonate : 48.560og. () Mass of sodium bicarbonate in Exp. ? 5.3599 g. used D) Moles of sodium bicarbonate Used= mass Molecular weight of Nanco₂ = 84 Molecular weight g/mol Moles of Nancoz = 5.3599 g 84 g/mol оf Моли No11(0, - o-o6 30 то 24 | Mass of Decomposition Product = 2.9500g Yilds Theoretical on the basis of Decomposition calculate Two Products are theoretical Yield possible. we will for each (1) Nazcoz Product 2 Narica, (s) A Nag (03 (5) + (Solid Residue) H₂O (9) + (O (9) Gases escape According g moles of to sto chiometly, Nak CO₂ produces I mole of Nazloz

- 0.0638 moles of Nanco, produces 0.0638 moles of Moles of Na, con produced: 0.06838 = 0.0319 moles Molar Mass of Na₂CO₃= 106 g/mol g Mass of 106 Na₂CO3 = 0.0319 x = 3.3814 g Theoretical Yield of Na₂CO3 = 3-3814 g roduct (2) Nazo a Narcos Product - Na₂O (5)+ H₂O + 200₂ (هاده؟) Gajes According a moles to stochiometry, Narcos produces of I mole Nazo of Moles of Nazo produced = 0.0638 = 0.0319 moles Molae mass of Nazo = 62 g/mol g Mass of Mass of Nazo formed: Nazo formed = 0.0319 x 62 1.9778 g Not possible. Because Theoretical Yield - 1.9978 is less than experimental Yield: 2.95g . Therefore only Nazcoz is the product formed.