Question

The temperature jump in a fast relaxation experiment is typically induced by a

A.laser pulse
B.pressure compression
C.combustion reaction
D.microwave burst

You can tell that the kinetics of a reaction is diffusion limited reaction if the rate is dependent on

A.pressure
B.solvent viscosity
C.temperature
D.substrate concentration

Increasing the salt concentration will likely increase the rate of which one of the following reactions?

A. A + B ↔ C ‡
B. A2+ + B2- ↔ C ‡
C. 2A + 2B ↔ C ‡
D. A- + B- ↔ C ‡2-

Answer 1

A.laser pulse

B.solvent viscosity

A²⁺ + B^2- ↔ C ^‡

^EXPLANATION

1)Laser pulse short-time irradiation much shorter than microwave. To fast relaxation experiment need to make as short as possible temperature jump. The fastest possible excitation.

2) In diffusion limited reaction reaction rate will deppend on number of interactions of reagent molecules. Since, diffusion is complicated - less viscosious solvent - beter molecules movement - more interaction - higher rate.

3)Salt normaly consist of cation C+ and anion A-. Since, no exact answer whose concentration (cation or anion) increase reaction rate - supose both ions has impact. Thus, reaction between chargen particles