Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. chemistry
  3. this is from an experiment simulating a breathalyz

This is from an experiment simulating a breathalyzer. Potassium dichromate standard is 0.625 mg/mL in 9M...

70.2K

Verified Solution

Question

Chemistry

This is from an experiment simulating a breathalyzer. Potassiumdichromate standard is 0.625 mg/mL in 9M sulfuric acid. We areusing the equation 3 C2H5OH + 2 K2Cr2O7 + 8 H2SO4→ 3 CH3COOH + 2 Cr2(SO4)3 + 2 K2SO4 + 11 H2O for the reaction ofdichromate and ethanol.

Operating wavelength : 436 nm
Absorbance of solution 1 (10.0 mL Standard Dichromate and 1.00 mLH2O) : 0.577 a.u.
Absorbance of solution 2 (10.0 mL Standard Dichromate and 1.00 mLethanol standard) : 0.445 a.u.
Absorbance of solution 3 (10.00 mL Standard Dichromate and 1.00 mLsimulated ethanol DWI sample) : 0.438 a.u.
Mass of dichromate in Solution 1 : 6.25 mg
Mass of dichromate in Solution 2: 4.820 mg
Mass of dichromate in Solution 3: 4.744 mg

For solutions 2 and 3, what is the mass of dichromate consumed,the moles of dichromate consumed, the moles of ethanol consumed,and the mass of ethanol consumed?

Answer & Explanation Solved by verified expert
3.5 Ratings (435 Votes)
    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Zin AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Q

Consider a 4-year amortizing loan. You borrow $2,700 initially and repay it in four equal annual...

Finance
Q

A report suggests that business majors spend the least amount of time on course work than...

Statistics
Q

The Mesentery Describe the formation of lymph within that region, relating that to blood vessels within...

Medical Sciences
Q

7 A load of 300 kW with power factor 0 65 lagging has the power...

Physics
Q

40 Current Electricity 36 The equivalent resistance between A and B in the following network...

Physics
Q

4 3 SI units A bridge to be fabricated of steel girders is designed to...

Basic Math
Q

Using the following values, find the mean, median, mode and midrange.58, 51, 38, 49, 59,...

Basic Math
Q

Evaluate the function.f(x) =?x + 3x + 13Find f(-10)

Basic Math
Q

Use integration to find f(4), if df/dx = 3x^1/3, and f(1)=4.8.04412.87213.76316.037

Basic Math
Q

The widths of platinum samples manufactured at a factory are normally distributed with a mean...

Statistics
Q

Question: 5 i. On March 01, 2020, DHL purchased a delivery truck for...

Accounting
Q

Restin Co. uses the gross method to record sales made on credit. On June 1,...

Accounting