Answer the following questions. 1. For the metal salt indicated in the procedure, you should use FeCl2.4H2O. Calculate the molar mass of this compound to 2 decimal places. g/mol correct 1/1 2. Your oxalate synthesis product will be FeC2O4.2H2O. Calculate the molar mass of this compound to 2 decimal places. g/mol correct 1/1 3. Balance the molecular equation that shows your metal salt, FeCl2.4H2O, reacting with oxalic acid (H2C2O4) to form FeC2O4.2H2O (enter a 1 if a stoichiometric coefficient is one).
Answer the following questions.
1. For the metal salt indicated in the procedure, you should use FeCl2.4H2O. Calculate the molar mass of this compound to 2 decimal places.
g/mol
2. Your oxalate synthesis product will be FeC2O4.2H2O. Calculate the molar mass of this compound to 2 decimal places.
g/mol
3. Balance the molecular equation that shows your metal salt, FeCl2.4H2O, reacting with oxalic acid (H2C2O4) to form FeC2O4.2H2O (enter a 1 if a
| FeCl2.4H2O | + | H2C2O4 ⇒ | FeC2O4.2H2O + | H2O + | HCl |
4. Pyrolysis of FeC2O4.2H2O will follow one of the following molecular equations. Balance each molecular equation,
| a. | FeC2O4.2H2O + | O2 ⇒ | FeO | + | H2O | + | CO2 | |||
| b. | FeC2O4.2H2O + | O2 ⇒ | Fe2O3 | + | H2O | + | CO2 | |||
| c. | FeC2O4.2H2O | ⇒ | FeCO3 | + | H2O | + | CO |
(b)correct, 1/1
(c)correct, 1/1
5. For pyrolysis reaction (4a) (above), calculate the theoretical yield (in grams) of the solid product, if you use 1.0 g FeC2O4.2H2O and that oxygen is the excess reactant
g
6. For pyrolysis reaction (4b) (above), calculate the theoretical yield (in grams) of the solid product, if you use 1.0 g FeC2O4.2H2O and that oxygen is the excess reactant
g
7. For pyrolysis reaction (4c) (above), calculate the theoretical yield (in grams) of the solid product, if you use 1.0 g FeC2O4.2H2O and that oxygen is the excess reactant
g
Complete the table below
| Data | Result |
|---|---|
| Mass of hydrated metal salt used | 4.000 g |
| Volume of oxalic acid used (assume its concentration is, 4.000 g oxalic acid/50.00 mL soln) | 50.00 mL |
| Mass of oxalic acid used | 4.000 g |
| Mass of weigh dish + contents (after reaction) | 3.983 g |
| Mass of empty weigh dish | 1.881 g |
| Mass of filter paper | 0.101 g |
| Actual yield of hydrated metal oxalate ppt | (A) g |
| Limiting reactant | (B) |
| Theoretical yield of hydrated metal oxalate product | (C) g |
| Percent yield of hydrated metal oxalte product | (D) % |
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