Environmental engineering

posted by .

The company you work for plans to release a waste stream containing 7 mg/L
of benzaldehyde . Assuming that benzaldehyde degrades according to the reaction:
C7H6O + 8O2 → 7CO2 + 3H2O
Calculate the theoretical carbonaceous oxygen demand of this waste stream in mg/L.

  • Environmental engineering -

    Molecular Weights:
    C7H6O = 106g/mol = 106mg/mmol
    O2 = 32g/mol = 32mg/mmol

    Stoichiometry Demand:
    8 moles of O2 are needed per 1 mole of C7H6O

    Therefore:
    (8mol-O2)/(1mol-C7H6O) * (32g/mol)/(106g/mol) * 7mg/L

    All units will cancel except mg/L:
    8*(32/106)*7 = 16.906 mg/L

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Organic Chem/ Calculate Yield

    How would you calculate the percent yield for a reaction that began with 10 moles of acetone and 16 moles of benzaldehyde which yielded 6 moles of dibenzalacetone as the product?
  2. organic chemistry

    the crossed aldol condensation of acetaldehyde with benzaldehyde is aided by the face that benzaldehyde bears no alpha protons however a possible competitive reaction is the self condensation of two molecules of acetaldehyde. slow …
  3. Chemistry

    How many grams of carbon dioxide are produced if you react 200g of benzaldehyde reacr with 32g of oxygen?
  4. Chemistry

    I recently did an experiment on Aldol Condensation, by reacting Benzaldehyde with Acetone to form Dibenzalacetone. The proposed stoichiometric ratio of Benzaldehyde:Acetone is 2:1. What would be the implications if either of the reactants …
  5. Chemistry

    I know that benzaldehyde decomposes into benzoic acid and benzyl alcohol via Cannizzaro Reaction.. But, can benzyl alcohol go through a Cannizzaro Reaction to form benzaldehyde and benzoic acid?
  6. Chemistry

    (1)Aluminum reacts with oxygen to produce aluminum oxide according to the following reaction: 4Al(s) + 3O2(g) → 2Al2O3(s) Calculate the moles of Al2O3 produced when the reaction is performed with 31.06 g of each reactant. (2)Nitrogen …
  7. chemisry

    Q2. Distinguish between the following- 1. CH3OH and C2H5OH 2. Phenol and methanol 3. 1-Propanol and 2-Methyl-2-propanol 4. Ethenol and 1-propanol 5. Propanol and propanone 6. Acetaldehyde and benzaldehyde 7. Benzaldehyde and benzoic …
  8. Chemistry - Science

    A fuel cell designed to react grain alcohol with oxygen has the following net reaction: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) The maximum work that 1 mol of alcohol can yield by this process is 1320 kJ. What is the theoretical …
  9. Stream Physics Hydrology - HELP!!!!

    1a) An aqueous solution containing 35 kg of endosuflan insecticide is accidentally released into a small stream. The stream dimensions are 17.5 meters wide and 1.15 meters deep. The stream velocity is 1.1 m/s. The stream channel drops …
  10. Science: Chemistry

    Pentane (C5H12) burns in oxygen to produce carbon dioxide and water. C5H12(g)+8O2(g)→5CO2(g)+6H2O(g) Calculate the mass of CO2 that can be produced if the reaction of 38.5 g of pentane and sufficient oxygen has a 58.0 % yield.

More Similar Questions