## First Order Reaction

$\frac{d[R]}{dt}=-k[R]; \ln [R]=-kt + \ln [R]_{0}; t_{\frac{1}{2}}=\frac{0.693}{k}$

Abigail Menchaca_1H
Posts: 104
Joined: Sat Sep 07, 2019 12:19 am

### First Order Reaction

What are characteristics that indicate a first order reaction

PranaviKolla2B
Posts: 114
Joined: Fri Aug 30, 2019 12:17 am

### Re: First Order Reaction

Does someone have a good video explaining how to find a first order reaction vs a second?

Ashley Fang 2G
Posts: 102
Joined: Fri Aug 30, 2019 12:17 am

### Re: First Order Reaction

Abigail Menchaca_1H wrote:What are characteristics that indicate a first order reaction

If the reaction rate increases proportionally with the reactant concentration, then it's a first order reaction (assuming there's only 1 reactant) because the exponent is 1 in the rate equation. Rate = k[A]n
For example, if the reaction concentration doubles and the resulting reaction rate also doubles, then you know it's first order.

Ashley Fang 2G
Posts: 102
Joined: Fri Aug 30, 2019 12:17 am

### Re: First Order Reaction

PranaviKolla2B wrote:Does someone have a good video explaining how to find a first order reaction vs a second?

These videos explain reaction orders pretty well!

505306205
Posts: 97
Joined: Thu Jul 25, 2019 12:15 am

### Re: First Order Reaction

A first order reaction is characterized by the linear graph of concentration and time.