Chemistry

posted by .

Determine the theoretical and percent yield of hydrogen gas if 80.5 g water undergoes electrolysis to produce hydrogen and oxygen and 2.81 g hydrogen is collected.
theoretical yield

  • Chemistry -

    % yield = (exp.yield)/(theoretical) x 100%

    exp. yield = 2.81g

    to find theoretical yield;

    1. Construct a balance equation for water electrolysed into H2 and O2. Note the mole ratio between H2O and H2.

    2. calculate the mole of H2O using n = m/Mr where m is 80.5g and Mr is molar mass of water.

    3. Use the mole in 2 to find the mole of H2 using the mole ratio from the balance equation in 1.

    4. Use the mole in 3 to find the mass of H2 using m = nMr where n is the mole in 3 and Mr is the molar mass of H2.

    the mass you find will be your theoretical yield.

    plug in your values and calculate for % yield.


    hope that helps..

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    A chemist reacts 8.85 g of iron with an excess of hydrogen chloride to form hydrogen gas and iron choloride. How do you calcualte the theoretical yield and the percentage yield of hydrogen if .27g H2 are collected.
  2. chemistry

    Determine the mass of hydrogen gas if 36g of water undergoes electrolysis to produce hydrogen and oxygen.
  3. chemistry

    Determine the mass of hydrogen gas if 36g of water undergoes electrolysis to produce hydrogen and oxygen.
  4. chemistry

    Determine the mass of hydrogen gas if 36g of water undergoes electrolysis to produce hydrogen and oxygen.
  5. chemistry

    a chemist reacts 8.85g or iron with an excess oh hydrogen chloride to form hydrogen gas and iron(II)chloride.calculate the theoretical yield and the percentage yield of hydrogen if 0.27g H2 are collected
  6. Chemistry

    I have this question and I am pretty sure on what to use to solve it but I am just stuck. The reaction of 8 g of hydrogen and 28 g of carbon monoxide gave 16 g of methanol. What was the theoretical yield if the percent yield was 50%?
  7. chemistry

    Determine the theoretical and percent yield of hydrogen gas if 78.0 g water undergoes electrolysis to produce hydrogen and oxygen and 3.02 g hydrogen is collected.
  8. chemistry

    Determine the theoretical and percent yield of hydrogen gas if 78.5 g water undergoes electrolysis to produce hydrogen and oxygen and 3.63 g hydrogen is collected?
  9. chemistry

    Determine the theoretical and percent yield of hydrogen gas is 36 g of water undergoes electrolysis to produce hydrogen and oxygen and 3.8 g of hydrogen is collected.
  10. Chemistry

    Determine the theoretical and percent yield of hydrogen gas if 78.5 g water undergoes electrolysis to produce hydrogen and oxygen and 3.23 g hydrogen is collected.

More Similar Questions