• Home
  • Chemistry
  • Astronomy
  • Energy
  • Nature
  • Biology
  • Physics
  • Electronics
  • Silver Bromide Precipitation: Calculating Gram Yield from Silver Nitrate and Sodium Bromide
    Here's how to solve this problem:

    1. Write the balanced chemical equation:

    AgNO₃(aq) + NaBr(aq) → AgBr(s) + NaNO₃(aq)

    2. Determine the limiting reactant:

    * Calculate moles of AgNO₃:

    (5.00 mL) * (0.100 mol/L) * (1 L/1000 mL) = 0.000500 mol AgNO₃

    * Calculate moles of NaBr: You didn't provide a concentration for the sodium bromide solution, so I'll assume it's a 0.200 M solution for this example.

    We need the volume of the NaBr solution to calculate moles. Let's assume we have 10.0 mL of the NaBr solution.

    (10.0 mL) * (0.200 mol/L) * (1 L/1000 mL) = 0.00200 mol NaBr

    * The limiting reactant is AgNO₃ because it has fewer moles than NaBr. This means that AgNO₃ will be completely consumed in the reaction, and the amount of AgBr formed will be determined by the amount of AgNO₃.

    3. Calculate the moles of AgBr formed:

    Since the balanced equation shows a 1:1 mole ratio between AgNO₃ and AgBr, the moles of AgBr formed will be equal to the moles of AgNO₃ used:

    0.000500 mol AgNO₃ = 0.000500 mol AgBr

    4. Calculate the mass of AgBr formed:

    * Find the molar mass of AgBr:

    Ag: 107.87 g/mol

    Br: 79.90 g/mol

    Molar mass of AgBr = 107.87 + 79.90 = 187.77 g/mol

    * Calculate the mass:

    (0.000500 mol AgBr) * (187.77 g/mol) = 0.0939 g AgBr

    Therefore, approximately 0.0939 grams of AgBr will be formed.

    Important Note: This calculation assumes the volume of the NaBr solution is 10.0 mL. If you have a different volume, you will need to recalculate the moles of NaBr and determine the limiting reactant accordingly.

    Science Discoveries © www.scienceaq.com