Questions from General Chemistry

Q: The following data represent the product concentrations versus time during the initial

The following data represent the product concentrations versus time during the initial stages of pseudo-first-order reactions with different initial concentrations of analyte [A]0: For each concentra...

Q: Calculate the product concentrations versus time for a pseudo-first-

Calculate the product concentrations versus time for a pseudo-first-order reaction with k’ = 0.015 s-1 and [A]0 = 0.005 M. Use times of 0.000 s, 0.001 s, 0.01 s, 0.1 s, 0.2 s 0.5 s, 1.0 s, 2.0 s, 5.0...

Q: Explain why pseudo-first-order conditions are utilized in many

Explain why pseudo-first-order conditions are utilized in many kinetic methods.

Q: Derive an expression for the half-life of the reactant in

Derive an expression for the half-life of the reactant in a first-order process in terms of the rate constant k.

Q: Name three characteristics of inductively coupled plasmas that make them suitable for

Name three characteristics of inductively coupled plasmas that make them suitable for atomic mass spectrometry.

Q: Find the natural lifetime in seconds for first-order reactions corresponding

Find the natural lifetime in seconds for first-order reactions corresponding to a) k = 0.497s-1 . b) k = 5.35 h-1. c) [A]0 = 3.16 M, and [A]t = 0.496 M at t = 3876 s. d) [P]∞ = 0.255 M, and [P]t =...

Q: Find the first-order rate constant for a reaction that is

Find the first-order rate constant for a reaction that is 75.0% complete in a) 0.0100 s. b) 0.400 s c) 1.00 s. d) 3299 s e) 26.8 s f) 9.38 ns.

Q: Find the number of half-lives required to reach the following

Find the number of half-lives required to reach the following levels of completion: a) 10%. b) 90%. c) 99.9%. d) 50%. e) 99%. f) 99.99%.

Q: Calculate the number of lifetimes t required for a pseudo-first

Calculate the number of lifetimes t required for a pseudo-first-order reaction to achieve the levels of completion listed in Problem 28-8. Levels of completion listed in Problem 28-8: a) 10%. b) 90%...

Q: Find the relative error associated with the assumption that k’ is invariant

Find the relative error associated with the assumption that k’ is invariant during the course of a pseudo-first order reaction under the following conditions: