Chem PLTL Workshop 9

Stoichiometry

100

2HClO₃ + Sr(OH)₂ → Sr(ClO₃)₂ + 2H₂O

If 0.099 moles of HClO₃ are reacted, how many moles of Sr(ClO₃)₂ will be produced?

0.050 moles of Sr(ClO₃)₂

200

AgNO₃ + NaCl →  AgCl + NaNO₃

If 5.7 moles of NaCl are reacted, how many grams of AgCl will be produced?

820g AlCl

300

Zn + I₂ → ZnI₂

If 25g of I₂ are reacted, how many grams of ZnI₂ will be produced?

31g ZnI₂

400

Mg + ZnSO₄ → Zn + MgSO₄

If 385.8g of ZnSO₄ are reacted with 0.9354 moles of Mg, how many moles of MgSO₄ will be produced?

0.9354 moles MgSO₄

500

CoO + H₂ → Co + H₂O

When 0.01272 moles of CoO are reacted, 0.2177g of H₂O are produced. What is the percent yield of this reaction?

95.00%

Stoichiometry pt 2

100

What is the formula for percent yield?

% yield = (actual)/(theoretical) * 100%

200

6H₃BO₃ → H₄B₆O₁₁ + 7H₂O

If 70.8g of H₂O are produced, how many moles of H₃BO₃ were reacted?

3.37 moles H₃BO₃

300

Ti + 2Cl₂ →  TiCl₄

If 21.61g of Cl₂ are reacted, how many grams of TiCl₄ will be produced?

28.90g TiCl₄

400

H₂SO₄ + 2NaHCO₃ → Na₂SO₄ + 2CO₂ + 2H₂O

23 moles of NaHCO₃ were reacted to produce 270g of H₂O. What is the percent yield of this reaction?

66%

500

Fe₂O₃ + 3CO → 2Fe + 3CO₂

If 0.06965 moles of CO are reacted with 93.00g of Fe₂O₃, how many grams of Fe will be produced? What is the limiting reagent?

2.593 grams Fe

CO is the limiting reagent