posted by .

What is the mass/ vol% ethanol in an ethanol water solution with density of 0.875g/ml and containing 65% ethanol by volume? The density of pure ethanol is 0.789g/ml?

My calculation
0.875g/ml x 1000ml x 0.65/ 46.06 = 12.34m
12.34/0.789g = 15.6g I am not sure answer. Pls help

  • Chemistry -

    I would consider this.
    If the solution is 65% by volume EtOH, then in 1 L soln there are 650 mL EtOH. Since mass = volume x density, then the mass of EtOH in the L is 650 mL x 0.789 g/mL = 512.9 g.
    Then (512.9/1000)*100 = 51.3% w/v.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry II

    A solution of ethanol in water is prepared by dissolving 61.0 mL of ethanol (density = 0.79g/mL) in enough water to make 280.0 mL of solution. What is the molarity of the ethanol in this solution?
  2. chemistry

    What is the mass/vol % ethanol in an ethanol-water solution with density of 0.875 g/ml and containing 65.0% ethanol by volume?
  3. Chemistry

    At 20 degrees C ethanol has a density of 0.789 g/ml and H2O has a density of 1.0 g/ml. What is the % by volume of ethanol of a solution made by adding 50g of ethanol with 50g of H2O?
  4. chemistry

    What is the percent by volume (% v/v) of a solution made by mixing 12 ml of ethanol (C2H5OH) with 48 ml of water?
  5. Chemistry #11

    A solution of ethanol (C2H5OH) is prepared by dissolving 35.0 ml of ethanol in enough water to make 120.0 ml of solution. What is the molarity of the ethanol in this solution?

    An ethanol-water solution is prepared by dissolving 10.00 ml ethanol C2H5OH (density=0.789g/ml) in sufficient water to produce 100.00 ml of solution with a density of 0.982g/ml. What is the concentration of ethanol in this solution?
  7. chemistry

    You have a solution that contains 340ml of water and 20ml of ethanol. Find the concentration of ethanol in this solution in each of the following units: (density of water is 1.00 g/ml, density of ethanol is 0.789g/ml)
  8. Chemistry

    The density of ethanol is 0.789g/cm3 at 20 degreesC. What volume of ethanol has a mass of 15.5 grams?
  9. Science - Chemistry

    If vapour pressure of water is 17.5 torr at 20C, what is the water vapour pressure inside a bottle of 100 proof whiskey?
  10. chemistry

    When 25 mL of C2H5OH (density 0.80 is dissolved in water to prepare a 250 mL solution, the density of the solution was found to be 0.950 Calculate a. Molarity of pure ethanol; b. Molarity of ethanol in the final solution; …

More Similar Questions