Lab Ses Name Tait K Lab Partner Data Sheet ---Experiment 8 Write the balanced equation for the reaction of NaHCO, with HCI. What mole ratio, for NaCl to NaHCO, does the equation predict? Record your results in the table below, being sure to include the correct units. Tube Tube B Tube A 2Mass of tube + NaHCO3 Mass of tube (Beabel) 3. Mass of NaHCO3 4. Moles of NaHCO3 5. Mass of tube + Naci 6. Mass of tube 7. Mass of NaCl 8. Moles of NaCl 9. Ratio: moles of NaCl moles of NaHCO Average ratio for the three results: u Class average for the ratio: (lowest: highest: 60 Experiment 8 Do your experimental results, and those of the class, agree with the balanced equation? Discuss your answer. If you think any results should be excluded from calculating the average class ratio, explain why and calculate a revised average ratio, Suggest two possible sources of error in this experiment (do not include weighing errors). Indicate whether each error would increase or decrease the experimental value for the mole ratio. Suppose that you used sodium carbonate, Na.Cos, instead of sodium bicarbonate. Balana following equation by writing numbers before each reagent (note that "1" does not need to written) Na2CO3 + HCl NaCl + CO2 + HO What mole ratio, for NaCl to Na Cos, does this balanced equation predict? If you or others in your class performed this experiment using sodium carbonate, discuss how well your calculated mole ratio agrees with the predicted value