Stoichiometry+Problems

Stoichiometry Problems

Mole Ratios

1. Given the following equation, write two legitimate mole ratios.

3HCl + Al(OH)3 --> AlCl3 + 3H2O

Use the equation above for the rest of the problems.

2. If you have 7 moles of HCl, how any moles of Al(OH)3 will you need to use?

3. If you have 0.750 moles of Al(OH)3, how many moles of H2O will you produce?

4. If you have 6.5 moles of AlCL3, how many moles of HCl did you need to use?

Limiting Reactants

5. If you have 2 moles of Al(OH)3 and 2 moles of HCl, which is your limiting reactant? 6. If you have 4 moles of Al(OH)3 and 1 mole of HCl, which is your limiting reactant?

7. If you have 1mole of Al(OH)3 and 4 moles of HCl, which is your limiting reactant?

8. If you have 3 moles of Al(OH)3 and 2 moles of HCl, which is your limiting reactant?

Percent Yield

9. From the equation above, if you use 0.5 moles of HCl, what is your theoretical yield of AlCl3 in grams?

10. If you make 10 g in the lab, what is your percent yield?

11. From the equation above, if you use 0.5 mole of Al(OH)3, what is your theoretical yield of AlCl3 in grams?

12. If you make 50 g in the lab, what is your percent yield?