Breathalyzers determine the alcohol content in a person's breath by the following (unbalanced) redox reaction:
C2H5OH + Cr2O72− → CH3CO2H + Cr3+ (acidic solution)
If analysis of a breath sample generates 6.80 x 10-4 M Cr3+ ions in 75.0 mL, how many mg of alcohol did it contain?
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Breathalyzers determine the alcohol content in a person's breath by the following (unbalanced) redox reaction: C2H5OH...
Breathalyzers determine the alcohol content in a person's breath by the following (unbalanced) redox reaction: C2H5OH + Cr2O72− → CH3CO2H + Cr3+ (acidic solution) If analysis of a breath sample generates 7.60 x 10-4 M Cr3+ ions in 35.0 mL, how many mg of alcohol did it contain?
Breathalyzers determine the alcohol content in a person's breath by the following (unbalanced) redox reaction: C2H5OH + Cr2O72− → CH3CO2H + Cr3+ (acidic solution) If analysis of a breath sample generates 1.70 x 10-4 M Cr3+ ions in 25.0 mL, how many mg of alcohol did it contain? NOTE: This is a case of balancing the chemical equation correctly, using redox reactions. Once you have the correct stoichiometric ratio between ethanol and Cr3+, as well as the molecular weight of...
Breathalyzers determine the alcohol content in a person's breath by the following (unbalanced) redox reaction: C2H5OH + Cr2O72− → CH3CO2H + Cr3+ (acidic solution) If analysis of a breath sample generates 1.70 x 10-4 M Cr3+ ions in 25.0 mL, how many mg of alcohol did it contain? NOTE: This is a case of balancing the chemical equation correctly, using redox reactions. Once you have the correct stoichiometric ratio between ethanol and Cr3+, as well as the molecular weight of...
Breathalyzers determine the alcohol content in a person’s breath by a redox reaction using dichromate ions (the unbalanced reaction is shown below). C2H5OH + Cr2O72− → CH3CO2H + Cr3+ a. Determine the number of electrons transferred in this redox reaction. b. Determine the concentration (in M) of Cr3+ in 50.0mL of solution at the Canadian legal blood alcohol concentration limit (BAC, limit is 0.08 mg/mL).
3. Alcohol (C2H5OH) levels in blood can be determined by a redox titration as follows: C2H5OH (aq) + 2 Cr2O72-(aq) + 16 H+ ----> 2 CO2 (g) + 4 Cr3+(aq) + 11 H2O (a) How many grams of alcohol are in a blood sample if 8.76 mL of 0.04988M K2Cr2O7 is required for its complete titration? Suppose the sample of blood in Part (a) weighed 10.002 g, what is the mass % of alcohol in the sample?
A person's blood alcohol (C2H5OH) level can be determined by titrating a sample of blood plasma with a potassium dichromate solution. The balanced equation is 16H+(aq) + 2Cr2O72−(aq) + C2H5OH(aq) → 4Cr3+(aq) + 2CO2(g) + 11H2O(l) If 35.46 mL of 0.05961 M Cr2O72− is required to titrate 27.30 g of plasma, what is the mass percent of alcohol in the blood?
More Practice Balancing Redox Reactions in Acid and Basic Solution Balance the following redox reaction in both acidic and basic solution using the half reaction method outlined in Recitation 10, Part III. 3. Unbalanced: PbO2(s) + Mn2+(aq) → Pb2+ (aq) + MnO4- (aq) 4. Unbalanced: SO42-(aq) + Cr3+(aq) → SO2(g) + Cr2O72-(aq)
- 1 hour 8/20 Content attribution Balance the following redox reaction in an acidic solution. How many water molecules are in the balanced reaction? Ga + NO3 → Ga3+ + NO Select the correct answer below: 0 0 0 0 FEEDBACK Content attribution Which pair of aqueous solutions, when mixed, will form a precipitate
Experiment 10 Breathalyzer Reaction: PRELAB 1. The device used to measure the alcohol content of a person's breath is the 2. The breathalyzer test is based on the fact that the concentration of alcohol in one's is directly proportional to the concentration of alcohol in one's blood. 3. There are many different compounds that are classified as alcohols. For example, the alcohol found in rubbing alcohol is a different chemical compound than the alcohol present in alcoholic beverages. Ethanol is the name of the...
Part A. Which of the following is not a redox reaction?
H2O(l) + NH3(g) NH4+(aq) + OH–(aq)
2H2(g) + O2(g) 2H2O(l)
Zn(s) + H2SO4(aq) ZnSO4(aq) + H2(g)
FeSO4(aq) + K2Cr2O7(aq) + 7H2SO4(aq) Cr2(SO4)3(aq) + 3Fe2(SO4)3(aq) + K2SO4(aq)
+ 7H2O(l)
Cl2(g) + 2KBr(aq) Br2(l) + 2KCl(aq)
Part B. A 43.46 mL sample of Na2SO3 was titrated with 68.99 mL
of 0.128 M K2Cr2O7 solution in the presence of H2SO4. Calculate the
molarity of the Na2SO3 solution. Enter to 3 decimal...