## What is the equation for second order reaction?

Second order reactions can be defined as chemical reactions wherein the sum of the exponents in the corresponding rate law of the chemical reaction is equal to two. The rate of such a reaction can be written either as r = k[A]2, or as r = k[A][B].

## WHAT IS A in K AE EA RT?

The Arrhenius equation is k = Ae^(-Ea/RT), where A is the frequency or pre-exponential factor and e^(-Ea/RT) represents the fraction of collisions that have enough energy to overcome the activation barrier (i.e., have energy greater than or equal to the activation energy Ea) at temperature T.

**How do you find the activation energy for the Arrhenius equation?**

Notice that when the Arrhenius equation is rearranged as above it is a linear equation with the form y = mx + b; y is ln(k), x is 1/T, and m is -Ea/R. The activation energy for the reaction can be determined by finding the slope of the line….

Temperature, °C | k, M-1•s-1 |
---|---|

40 | 6.4 x 10-3 |

**What is the activation energy calculator?**

The activation energy calculator finds the energy required to start a chemical reaction, according to the Arrhenius equation.

### What is order of reaction give one example of second-order reaction?

Reactions in which reactants are identical and form a product can also be second-order reactions. Many reactions such as decomposition of nitrogen dioxide, alkaline hydrolysis of ethyl acetate, decomposition of hydrogen iodide, formation of double-stranded DNA from two strands, etc.

### What is R in the equation k AE EA RT?

R= gas constant. T= temperature in Kelvin scale.

**How do you determine reaction order?**

Add the exponents of each reactant to find the overall reaction order. This number is usually less than or equal to two. For example, if reactant one is first order (an exponent of 1) and reactant two is first order (an exponent of 1) then the overall reaction would be a second order reaction.

**How do you find the activation energy for two rate constants?**

The value of the slope (m) is equal to -Ea/R where R is a constant equal to 8.314 J/mol-K. The activation energy can also be found algebraically by substituting two rate constants (k1, k2) and the two corresponding reaction temperatures (T1, T2) into the Arrhenius Equation (2).

#### How do you find the activation energy of an experiment?

The activation energy, Ea, can be determined graphically by measuring the rate constant, k, and different temperatures. The mathematical manipulation of Equation 7 leading to the determination of the activation energy is shown below. . Since, R is the universal gas constant whose value is known (8.314 J/mol.