1. Questions

Chemistry

Alcohol levels in blood can be determined by a redox titration with potassium dichromate according to the balanced equation:

C2H5OH(aq) +2Cr2O7-2 (aq) + 16H+(aq)---> 2CO2 (g) + 4 Cr3+ (aq) + 11H2O (l)
What is the blood alcohol level in mass perecent if 8.76 mL of 0.04988 M K2Cr2O7 is required for titration of a 10.0002 g sample of blood?

  1. 👍
  2. 👎
  3. 👁
Renee

  1. moles Cr2O7^-2 = M x L = ??
    Convert mole Cr2O7^-2 to moles C2H5OH using the coefficients in the balanced equation. That will be
    moles Cr2O7^-2 x (1 mole C2H5OH/2 moles Cr2O7^-2) = ??moles x (1/2) = xx moles C2H5OH.
    g C2H5OH = moles C2H5OH x molar mass C2H5OH.
    %C2H5OH = (g C2H5OH/mass sample)*100 = ??

    1. 👍
    2. 👎
    DrBob222

Respond to this Question

First Name

Your Response

Similar Questions

  1. algebra

    Medical research indicates that the risk of having a car accident increases exponentially as the concentration of alcohol in the blood increases. The risk is modeled by R=6e^12.77x Where x is the blood alcohol concentration and R,

  2. Science

    How many grams of potassium dichromate are required to prepare a 250ml solution of whose concentration is 2.16m.?

  3. alcoholic beverages

    Which of the following statements about alcohol is correct? A. Mixing different kinds of alcoholic beverages increases the rate of intoxication. B. Men and women metabolize alcohol at different rates. C. The higher the level of

  4. chemistry

    Which of the following statements best describes p orbitals? a dumbbell with a ring around it a sphere around the nucleus a four-leave clover two lobes apposing each other Examine the three isotopes of potassium (K) below.

  1. fgcu

    More than a decade ago, high levels of lead in the blood put 88% of children at risk. A concerted effort was made to remove lead from the environment. Now, suppose only 12% of children in the United States are at risk of high

  2. chemistry

    Laws passed in some states define a drunk driver as one who drives with a blood alcohol level of 0.08% by mass or higher. the level of alocohol can be determinded byt titrating blood plasma with pottasium dichromate according to

  3. biology

    5. A researcher finds that blood alcohol levels cause progressive damage to the liver. All the mice in his study were fed the same amount and types of food. Different concentrations of alcohol were injected into each mouse. One

  4. chemistry

    what is the balanced equation for the reaction of potassium dichromate and potassium hydrogen phthalate?

  1. AP Chemistry

    redox reaction: Hydrogen peroxide is added to an acidified solution of potassium permanganate. what is the total redox reaction?

  2. Chemistry

    Alcohol levels in blood can be determined by a redox titration with potassium dichromate according to the balanced equation: C2H5OH(aq) + 2Cr2O7(-2) (aq) + 16H+(aq)---> 2CO2 (g) + 4 Cr3(+)(aq) + 11H2O (l) What is the blood alcohol

  3. physiology

    The single most important factor influencing potassium ion secretion is a) the potassium ion content in the renal tubule cells b) intracellular sodium levels c) potassium ion concentration in blood plasma d) pH of the ICF c

  4. Chemistry

    I got this question wrong, and I'm not sure where my mistakes lie. Can someone show me what I'm not doing right and what the correct answers should be? "Some states have reduced the legal limit for alcohol sobriety from 0.10% to

You can view more similar questions or ask a new question.