STOICHIOMETRY OF SOLUTION

• Stoichiometry


  Calculations involving the quantitative relationships between the amounts of reactants and products in chemical reactions
• Solution stoichiometry problems


  • Same as regular stoichiometry problems except solutions are used
  • Moles must be determined using molarity and volume

  
• Steps in answering solution stoichiometry problems

  1. Write the GIVEN data in the problem

  2. Identify the UNKNOWN

  3. Determine the STEPS to solve the problem

  4. Start writing your SOLUTION

  5. Box your final ANSWER
• Molarity


  Moles of solute per volume of solution (mole/L)
• Conversion of volume units

  • 100 mL to 0.1 L
• The molar mass of Ca3(PO4)2 is 310 g/mol
• The molar mass of Cu2O is 143.1 g/mol
• The unit of molarity is mole/L
• The conversion of 100 mL to 0.1 L is correct
• Steps in answering solution stoichiometry problems (with volume given)

  1. Write the GIVEN data (volume, molarity)

  2. Identify the UNKNOWN (moles, mass)

  3. Determine the STEPS (use molarity to find moles, then use balanced equation)

  4. Write the SOLUTION

  5. Box the final ANSWER

  
• Steps in answering solution stoichiometry problems (with mass given)

  1. Write the GIVEN data (mass, molar mass)

  2. Identify the UNKNOWN (moles, volume)

  3. Determine the STEPS (use molar mass to find moles, then use molarity to find volume)

  4. Write the SOLUTION

  5. Box the final ANSWER