Question

Data Table

1. Mass of Beaker     49.93g

2. Mass of beaker + Na₂CO3 50.95g

3. Mass of Na₂CO₃ added into the beaker (line 2-line 1) 1.02g

4. Mass of graduated cylinder with 3M HCl solution 12.68g

5. Mass of graduated cylinder without 3M HCl solution 4.44g

6. Mass of 3M HCL solution added into the beaker (line4-line5) 8.24g

7. Mass of beaker + reactants (HCl+ Na₂CO₃; line 2+line 6) 59.19g

8. Mass of beaker + products without CO₂ (after the reaction is completed) 58.17g

9. Mass of CO₂ produced (actual yield of CO₂; line 7 and line 8) 0.42g

10. Mass of beaker + NaCl (after drying) 50.95g

11. Mass of NaCl produced (actual yield of NaCl; line 10-line1) 1.01g

Processing Data/Calculations:

1. Write a balanced equation describing the observed chemical change:

Na₂CO3_(s) + HCl_(aq) ----------->_______________ + ______________ + ______________

2. Calculate the theoretical yields (TY) of the products (sodium chloride and carbon dioxide) that should be produced from the known weight of Na₂CO₃ (Line 3):

TY_CO2=

TY_NaCl=

3. Report the experimental (actual) yields(EY) of sodium chloride and carbon dioxide produced in this experiment (data table, line # 9, 11):

EY_CO2=

EY_NaCl=

4. Calculate and report the percent yields (PY) of sodium chloride and carbon dioxide produced in this experiment:

PY_CO2=

PY_NaCl=

Answer 1

Nag CO + 2Her eMaci + co2 + ho TY (mace) : Imole Na,ce glyes 2 males of Mace mass of Ma, cos = mars of beaker + Ma cos) (maws of beaker) (50.45 - 49.93), - 1.029 Moles of Nazca a mass of MO, CO3 s molar weight of Mall hoe n = 0.00962 Stolar weight 1 = 23 x2 +1243x16 4€ + 12 +48 = 10 6 qlmol Hence, 0.00962 motes gives 2x0.00962 moles Mall = 0.01924 moler Ty (Mace) = Moles X Molar weight = 0.01924 x 58-500 = 1.125 V Similarly, Imole of Marcas gives 1 mole ia 0.01924 mole Mazlog giver 0:01924 moles con 60, 0 = males y Molari 0.01924 X 44 = 0.8465 g TY 3. Experimental yieed by co2 = mas of co₂ produced = 0.429 Ey Male = Maus Mace produced = 1014 percent yield PY.CO2 = 0.48 x 100 = 49,61% 0.8465 py Mall - 1.01 Xiloo - 89.17% 1.025