Alcohol is removed from the bloodstream by a series of metabolic reactions. The first reaction produces acetaldehyde; then other products are formed. The following data have been determined for the rate at which alcohol is removed from the blood of an average male, although individual rates can vary by 25−30%. Women metabolize alcohol a little more slowly than men: [C 2 H 5 OH]( M ) 4.4 × 10 − 2 3.3 × 10 − 2 2.2 × 10 − 2 Rate(moI/L/h) 2.0 × 10 − 2 2.0 × 10 − 2 2.0 × 10 − 2 Determine the rate equation, the rate constant, and the overall order for this reaction.
Alcohol is removed from the bloodstream by a series of metabolic reactions. The first reaction produces acetaldehyde; then other products are formed. The following data have been determined for the rate at which alcohol is removed from the blood of an average male, although individual rates can vary by 25−30%. Women metabolize alcohol a little more slowly than men: [C 2 H 5 OH]( M ) 4.4 × 10 − 2 3.3 × 10 − 2 2.2 × 10 − 2 Rate(moI/L/h) 2.0 × 10 − 2 2.0 × 10 − 2 2.0 × 10 − 2 Determine the rate equation, the rate constant, and the overall order for this reaction.
Alcohol is removed from the bloodstream by a series of metabolic reactions. The first reaction produces acetaldehyde; then other products are formed. The following data have been determined for the rate at which alcohol is removed from the blood of an average male, although individual rates can vary by 25−30%. Women metabolize alcohol a little more slowly than men:
[C2H5OH](M)
4.4
×
10
−
2
3.3
×
10
−
2
2.2
×
10
−
2
Rate(moI/L/h)
2.0
×
10
−
2
2.0
×
10
−
2
2.0
×
10
−
2
Determine the rate equation, the rate constant, and the overall order for this reaction.
Definition Definition Study of the speed of chemical reactions and other factors that affect the rate of reaction. It also extends toward the mechanism involved in the reaction.
Chloroform, long used as an anesthetic and now considered carcinogenic, has a heat of vaporization of 31.4 kJ/mol. During vaporization, its entropy increases by 94.2 J/mol.K. Therefore, select the alternative that indicates the temperature, in degrees Celsius, at which chloroform begins to boil under a pressure of 1 atm.
A) 28
B) 40
C) 52
D) 60
E) 72
If we assume a system with an anodic overpotential, the variation of n as a function
of current density:
1. at low fields is linear 2. at higher fields, it follows Tafel's law
Obtain the range of current densities for which the overpotential has the same value
when calculated for 1 and 2 cases (maximum relative difference of 5% compared to
the behavior for higher fields).
To which overpotential range does this correspond?
Data: i = 1.5 mA cm², T = 300°C, B = 0.64, R = 8.314 J K1 mol-1 and F = 96485 C mol-1.