HomeworkLib
Question

If a driver provides 3.07 g of ethanol (C2H6O) into the Breathalyzer, what is the concentration...

If a driver provides 3.07 g of ethanol (C2H6O) into the Breathalyzer, what is the concentration of acetic acid (C2H4O2) if we assume the final volume is 100. mL?

science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Moles of ethanol = mass / molar mass

= 3.07 / 46

= 0.0667 moles

In breathalyzer equation

3C2H5OH + 2K2Cr2O7 + 8H2SO4 = 2Cr2(SO4)3 + 3CH3COOH + 2K2SO4 + 11 H2O

so mole of C2H5OH = mole of CH3COOH = 0.0667

So Molarity = mole / volume ( in litre)

= 0.0667 / 0.1

= 0.667 M

If you satisfied with the solution please like it thankxx

If you have any query please comment

0 0
Add a comment
Know the answer?
Add Answer to:
If a driver provides 3.07 g of ethanol (C2H6O) into the Breathalyzer, what is the concentration...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • One type of breathalyzer employs a fuel cell to measure the quantity of alcohol in the breath. When a suspect blows into the breathalyzer, ethyl alcohol is oxidized to acetic acid at the anode: CH3CH2...

    One type of breathalyzer employs a fuel cell to measure the quantity of alcohol in the breath. When a suspect blows into the breathalyzer, ethyl alcohol is oxidized to acetic acid at the anode: CH3CH2OH(g)+4OH−(aq)→HC2H3O2(g)+3H2O(l)+4e− At the cathode, oxygen is reduced: O2(g)+2H2O(l)+4e−→4OH−(aq) The overall reaction is the oxidation of ethyl alcohol to acetic acid and water. When a suspected drunk driver blows 185 mL of his breath through this breathalyzer, the breathalyzer produces an average of 325 mA of current...

  • The following solutions of ethanol (C2H6O, M = 46.0 g mol-1 ; d = 0.790 g...

    The following solutions of ethanol (C2H6O, M = 46.0 g mol-1 ; d = 0.790 g mL-1 ) were mixed: • 50.0 mL of concentration 8.50 % (v/v) • 75.0 mL of concentration 72.0 g L-1 • 1.35 L of concentration 950 ppm • 8.00 x 104 μL of concentration 25.0 mg mL-1 • 125 mL of concentration 1.25 M Assuming that mixing has no effect on the total volume, what is the concentration of ethanol in the final solution,...

  • If 36.17 g of ethanol, C2H6O, are mixed with 73.81 g of water, what is the...

    If 36.17 g of ethanol, C2H6O, are mixed with 73.81 g of water, what is the molality of the ethanol in the solution? Assume the mixture is at 20 oC. The density of ethanol at 20 oC is 0.7893 g/mL; the density of water at 20 oC is 1.0000 g/mL. (Enter your answer to the hundredth place.)

  • A breathalyzer for alcohol concentration was used on a suspected drunk driver. The test is known...

    A breathalyzer for alcohol concentration was used on a suspected drunk driver. The test is known to provide a positive result in 95% of cases where the alcohol concentration is above the legal limit (intoxicated) . However it is known that the test provides a positive outcome on 4% of individuals who had not consumed alcohol (false positives). What is the probability that the driver is intoxicated given a positive to the test?

  • A breathalyzer is a device used to estimate the blood alcohol content of a suspected drunk...

    A breathalyzer is a device used to estimate the blood alcohol content of a suspected drunk driver by measuring the amount of alcohol in one's breath. The fuel cell breathalyzer employs the reaction below: CH2CH2OH(s)+O2(g) --HCH,O,(g)+H2O(g) When a suspected drunk driver blows his or her breath through the fuel cell breathalyzer. the device measures the current produced by the reaction and calculates the percent alcohol in the breath When a suspected drunk driver blows 208 mL of his breath through...

  • A vinegar (acetic acid) solution of unknown concentration was titrated to the light pink endpoint with the standardized NaOH solution.

    A vinegar (acetic acid) solution of unknown concentration was titrated to the light pink endpoint with the standardized NaOH solution. The weight volume % of the vinegar solution were calculated. Molecular formula of Acetic acid: C2H4O2 Volume of vinegar sample titrated (ml) 5.00 Volume of NaOH required to neutralize vinegar in (mL) 8.74 Concentration of NaOH in mol/L, 0.1979 Calculate the weight/volume percentage of the vinegar solution (g/100 ml). 

  • Solutions & Electrolytes Name Date Lab Meeting 1. What is the concentration of ethanol (C2H60) solution...

    Solutions & Electrolytes Name Date Lab Meeting 1. What is the concentration of ethanol (C2H60) solution that was prepared by dissolving 50-500 g of ethanol into water to a final volume of 750,0 mL? Assume the solution has a density of 1.20 g/mL a. % (m/m) b. M cal equations Predict if the following solutions would conduct

  • A solution is made by mixing 41.0 mL of ethanol, C2H6O, and 59.0 mL of water. Assuming ideal behavior, what is the vapor...

    A solution is made by mixing 41.0 mL of ethanol, C2H6O, and 59.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C? Values at 20 C: ethanol, density = 0.789 g/mL, VP = 43.9 torr water, density = 0.998 g/ml, VP = 17.5 torr

  • A stoichiometric mixture of ethanol (C2H6O), octane (C8H18), and air initially at T1 = 300 K,...

    A stoichiometric mixture of ethanol (C2H6O), octane (C8H18), and air initially at T1 = 300 K, P1 = 100 kPa, P2 =4500 kPa, and V1 = 5 liters (0.005 m3) is compressed in a piston-cylinder assembly in a polytropic process where n = 1.2 What is the final volume V2 (m3 ), the initial total volume of moles (kmol), and the final Temperature T2? NOTE: Universal gas constant: Ru = 8.314 k]/ kmolK Please show ALL steps and units with...

  • The density of a 40 wt% solution of ethanol in water is 0.937 g/mL. The density...

    The density of a 40 wt% solution of ethanol in water is 0.937 g/mL. The density of n-butanol is 0.810 g/mL. What is the concentration of n-butanol in ppm if you dissolve 25.0 μL of this alcohol in a 40 wt% solution of Ethanol in water. The final volume of the solution is 50.0 mL. Assume that the density of the ethanol solution does not change upon dissolution of the butanol. Use the correct number of significant figures! Hint: to...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT