##### Asked by: Brian Finnegan

## How do you find relaxation time in chemical kinetics?

Thus, the relaxation time can be determined, by **measuring the time it takes for X _{0} to decrease to X_{0}/2.718**. In other words, it is the time in which the relaxation process carries the system a fraction 1/e toward the equilibrium position. Thus, τ is a time interval like the half-life t

_{1}

_{/}

_{2}.

## What is relaxation method in chemical kinetics?

Chemical relaxation method is **a technique of studying the kinetics of fast reactions in which a chemical system at equilibrium is perturbed by rapid/sudden change in external conditions like temperature**.

## Which method is used for the determination of relaxation time?

The **NMR-Relaxation method** measures wettability of a liquid/solid system under different effects of intermolecular attraction on wetting and nonwetting surfaces in molecular motion by observing the dynamic behavior of fluid molecule on the surface [21].

## What is relaxation method in fast reaction?

In relaxation methods **a chemical or biological system at equilibrium is perturbed by a rapid change in external conditions** (e.g., temperature); the response of the system as it relaxes to the new equilibrium reveals the nature of the underlying reaction kinetics.

## Why are relaxation techniques important?

It’s a process that decreases the stress effects on your mind and body. Relaxation techniques **can help you cope with everyday stress**. And these techniques can help with long-term stress or stress related to various health problems, such as heart disease and pain.

## What is meant by relaxation process?

Relaxation processes **allow nuclear spins to return to equilibrium following a disturbance**, e.g. a radiofrequency pulse. The relaxation times T_{1} and T _{2} characterize the relaxation of, respectively, the longitudinal and transverse components of the magnetization M, respectively parallel and perpendicular to B_{0}.

## Is relaxation time constant?

**Time constant equal to the time in seconds for charge to decay by Ohm’s Law to e ^{–}^{1} (36.7%) of its initial value**. For a capacitor, the time constant (s) is the product of resistance (W) and capacitance (F).

## Which method is used to study the kinetics of fast reaction?

**Flash photolysis** is one of the few methods for studying the kinetics of fast reactions, which have been applied with equal success for both reactions in the gas and in the liquid phase. It is applicable to reactions that are initiated by light.

## What is chemical relaxation time?

Relaxation time is **the time required for the atom having an excited nuclear spin state to release energy, and relax to its ground nuclear spin state**. Related terms: NMR, spin-spin coupling, splitting, chemical shift.

## What affects relaxation times?

Experimental conditions such as **temperature and magnetic field** affect the relaxation time. The relaxation time is also magnetic field dependent (fig. 27) so the relaxation time measured on a 300 MHz NMR instrument will be different than that measured on a 600 MHz instrument.

## What relaxation time means?

Definition of relaxation time

1 : the time required for an exponentially decreasing variable (as the amplitude of a damped oscillation) to drop from an initial value to 1/e or 0.368 of that value (where e is the base of natural logarithms)

## What is the most effective relaxation technique?

1. **Breath focus**. In this simple, powerful technique, you take long, slow, deep breaths (also known as abdominal or belly breathing). As you breathe, you gently disengage your mind from distracting thoughts and sensations.

## How do you implement relaxation techniques?

**Relaxation preparation**

- find a cool and quiet room where you’ll not be disturbed.
- lie down or sit comfortably with your legs uncrossed.
- put on comfortable clothes and take off your shoes.
- lightly close your eyes, or focus on a spot in front of you.
- clear your thoughts and focus on your breath.

## What are the four steps in the relaxation response technique?

Quote from video: *Похожие запросы*

## What is chemical relaxation time?

Relaxation time is **the time required for the atom having an excited nuclear spin state to release energy, and relax to its ground nuclear spin state**. Related terms: NMR, spin-spin coupling, splitting, chemical shift.

## What is relaxation time in chemistry?

In the paper “On the Dynamical Theory of Gases,” which he presented in 1866, Maxwell referred to the time required for the elastic force produced when fluids are distorted to diminish or decay to 1/e (e is the base of the natural logarithm system) times its initial value as the “time of relaxation” of the elastic force

## What is relaxation time in drift velocity?

According to drift velocity expression, the relaxation time is **the time interval between successive collisions of an electron on increasing temperature**, the electrons move faster and more collisions occur quickly.

## What is relaxation time in polymers?

Viscoelastic models of polymer behaviour incorporate a relaxation time which is defined as **the ratio of the viscosity of the elements to their modulus** (see the article on polymer models).

## What is a relaxation test?

A creep test, sometimes referred to as a stress-relaxation test, is **used to determine the amount of deformation a material experiences over time while under a continuous tensile or compressive load at a constant temperature**.

## Is relaxation time constant?

**Time constant equal to the time in seconds for charge to decay by Ohm’s Law to e ^{–}^{1} (36.7%) of its initial value**. For a capacitor, the time constant (s) is the product of resistance (W) and capacitance (F).