Question

1. Using the mass and molar mass of \(\mathrm{CaCl}_{2}\) determine the number of moles of \(\mathrm{CaCl}_{2}\).

2. Convert the moles of \(\mathrm{CaCl}_{2}\) to moles of \(\mathrm{CaCO}_{3}\) using a mole ratio.

3. Convert the moles of \(\mathrm{CaCO}_{3}\) to grams of \(\mathrm{CaCO}_{3}\) using the molar mass.

4. Using the mass of \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) determine the number of moles of \(\mathrm{Na}_{2} \mathrm{CO}_{3}\).

5. Convert the moles of \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) to moles of \(\mathrm{CaCO}_{3}\) using a mole ratio.

6. Convert the moles of \(\mathrm{CaCO}_{3}\) to grams of \(\mathrm{CaCO}_{3}\) using the molar mass.

7. Using your answers to questions 3 and 6 , determine the limiting reactant and the theoretical yield of \(\mathrm{CaCO}_{3}\).

8. What is the experimental yield of \(\mathrm{CaCO}_{3}\) (from data table)?

9. Use the following equation to find the percent yield of \(\mathrm{CaCO}_{3}\) :

Percent Yield \(=\left(\frac{\text { Experimental Yield of Product }}{\text { Theoretical Yield of Product }}\right) \times 100\)

1. Balance the following chemical reaction:

$$ \mathrm{Na}_{2} \mathrm{CO}_{3}(\mathrm{aq})+\mathrm{CaCl}_{2}(\mathrm{aq}) \rightarrow \mathrm{CaCO}_{3}(s)+\mathrm{NaCl}(\mathrm{aq}) $$

2. Determine the molar mass of calcium chloride, \(\mathrm{CaCl}_{2}\). Show your work.

3. Determine the molar mass of calcium chloride, \(\mathrm{CaCO}_{3}\). Show your work.

4. Determine the molar mass of sodium carbonate, \(\mathrm{Na}_{2} \mathrm{CO}_{3}\), Show your work

Answer 1

1 of calcium chloride (Cache) = 2.09 glmon Molar mass of Cach - May So, moles of Ceca - Molar mass 2.0 0.018 moles Hence 0.018 moles of Cacho