Molar Mass Lab
Determination of the molar mass of carbon dioxide
Purpose:
The purpose of the practical that we completed was to determine the molar mass of carbon dioxide (CO2) by experimental means and to observe the reaction of hydrochloric acid and sodium carbonate. Using the balanced equation:
Na2CO3 + 2HCl → 2NaCl + H2O + CO2
Materials / Apparatus:
1) 8.00g of sodium carbonate,
2) 30mL of hydrochloric acid (6molL-1)
3) 100mL of hydrochloric acid (6molL-1)
4) 100mL conical flask,
5) 150mL glass beaker
6) 50mL glass beaker
7) Glass funnel,
8) Digital scales,
9) Metal spatula and a
10) Disposable plastic pipette.
Procedure: (for 2molL-1)
1) Weigh an empty conical flask and record its weight.
2) Keep empty conical flask on digital scale, and with a metal …show more content…
Data Presentation:
(See all calculations on sheet provided.)
Unfortunately, we misread the procedure and accidentally used a whole 8g of sodium carbonate for our first experiment with the 6mol-1, however we were able to do the second half correctly. For our experiment with the 100mL of hydrochloric acid (2mol-1), we were able to observe that 36.22 grams was used from the mass of the beaker and the hydrochloric acid after the reaction took place. The mass of the sodium carbonate used was 3.99g.
Data Analysis:
For the experiment that we did correctly, our group got 1.57gmol-1 for the molar mass of carbon dioxide. The known mass is 44.01gmol-1 (42.44gmol-1 difference).
Through the conservation of mass, the mass of carbon dioxide can be found. The ‘law of conservation of mass’ states that mass cannot be created or destroyed in chemical reaction. Therefore, when sodium carbonate and hydrochloric acid reacted together, there was no mass created or destroyed. The law also explains that, “when a chemical reaction rearranges atoms into a new product, the mass of the reactants is the same as the mass of the
Purpose:
The purpose of the practical that we completed was to determine the molar mass of carbon dioxide (CO2) by experimental means and to observe the reaction of hydrochloric acid and sodium carbonate. Using the balanced equation:
Na2CO3 + 2HCl → 2NaCl + H2O + CO2
Materials / Apparatus:
1) 8.00g of sodium carbonate,
2) 30mL of hydrochloric acid (6molL-1)
3) 100mL of hydrochloric acid (6molL-1)
4) 100mL conical flask,
5) 150mL glass beaker
6) 50mL glass beaker
7) Glass funnel,
8) Digital scales,
9) Metal spatula and a
10) Disposable plastic pipette.
Procedure: (for 2molL-1)
1) Weigh an empty conical flask and record its weight.
2) Keep empty conical flask on digital scale, and with a metal …show more content…
Data Presentation:
(See all calculations on sheet provided.)
Unfortunately, we misread the procedure and accidentally used a whole 8g of sodium carbonate for our first experiment with the 6mol-1, however we were able to do the second half correctly. For our experiment with the 100mL of hydrochloric acid (2mol-1), we were able to observe that 36.22 grams was used from the mass of the beaker and the hydrochloric acid after the reaction took place. The mass of the sodium carbonate used was 3.99g.
Data Analysis:
For the experiment that we did correctly, our group got 1.57gmol-1 for the molar mass of carbon dioxide. The known mass is 44.01gmol-1 (42.44gmol-1 difference).
Through the conservation of mass, the mass of carbon dioxide can be found. The ‘law of conservation of mass’ states that mass cannot be created or destroyed in chemical reaction. Therefore, when sodium carbonate and hydrochloric acid reacted together, there was no mass created or destroyed. The law also explains that, “when a chemical reaction rearranges atoms into a new product, the mass of the reactants is the same as the mass of the