Shavos q onda como andan soy Meño

Admin Posts : 10 Join date : 2009-02-19

Q onda Sh shavoosss!!! Jovenatzoosss, ey queridos ilustres trate de crear un foro en moodle para todos los de kimica con Martin!!!!!, pero resulta q necesito ser administrador para poder crear uno, haber si unos compas me dicen luego como hakear ese cotorreo......Anyway back to the point!!! Este foro lo cree para futuramente poder discutir, de que cosas no le entendemos..........DE tareas sorpresas q deje, En este preciso momento del Reporte q es para mañana, anyway pa todo jovenazoooooZ!!!!!!! gustooooooooo!!!!

Ueno cool espero q todos lean esto...........

att: Meño

Posts : 5 Join date : 2009-02-19

marco teorico agreguenle mas coas para ocmpetarlo bn

The speed of reaction is confromed by the speed of formation and the speed od sicomposition. The speed has not a constant value and depends on a lot of factors such as reagents concentration, the presence of a catalyst, the temperature of thjer eaction, and the contact surface with reagents and the catalyst.
The concentration is one of the most important factors in the speed, as more particles exist in the reaction, the chance of collision becomes higher, at the beginning as the concentration o freagents is higher, more collision happens and so the speed increase. As reagents disappear collsions decrease chance of collision now decrease and so does the speed.
In order To measure the speed of a reaction we need to measure either the concentration of the products or the concentration of reagents by unit of time, the units of the speed are measured in moles per second

Admin Posts : 10 Join date : 2009-02-19

Ey cuando pongan algo de Los Reportes porfa especifiquen que parte de el Reporte es, como Palabras Clave, Marco Teorico...................................................

Y al Ultimo porfa tambien ponganle quien posteo ese mensaje, ya que todos van a tener el mismo Username Y password (ya q les di uno generico pa q todos pudieran entrar), entonces no se va a saber quien postea q cosa........

Osea al final ponganle

Att: (Nombre).......jajaja no es por ser mamila pero es para q sea mas ordenando y todos lo chequemos

Att: Meño

Admin Posts : 10 Join date : 2009-02-19

De Esto me parece conveniente q Resumiéramos

Lo de Daniel se parece mucho a lo de Misael, asi que me parece prudente resumirlo, lo de Misael ya lo traduje al Ingles……..
MARCO TEORICO

Theory
Measuring the Velocity of a reaction, its one of the most important parts of applied chemistry. Since it gives us the opportunity to optimize chemical processes in an efficient manner.

The Key Factors that affect the Velocity of a reaction are the following:

• Temperature
• Surface of interaction contact
• And State of matter (Liquid, solid, gas)
• Concentration

On this particular case, we shall study the concentration factor.
Velocity Reaction its given by the concentration of its Reagents, both multiplied by each other and then by a Constant

Vrx = K[A][B]

• Where Vrx, its the velocity of a reaction in Molarity/time
• A & B, are the reagents in molar units
• And K, is the constant where the units are given by the reagents

Esto es lo de Daniel......

La velocidad de una reacción química depende de la cantidad disponible de reactivos, o más exactamente, de su concentración. Así, para una reacción del tipo:

R1 + R2 --> productos

la ecuación que relaciona la velocidad del proceso con la concentración de los reactivos se puede obtener experimentalmente, y se escribe en forma genérica como:

v = k [R1]n1 [R2]n2

donde k es una constante y n1 y n2 sendos coeficientes numéricos. Esta ecuación constituye la llamada ley de velocidad.

La constante de proporcionalidad k se denomina constante de velocidad y su dependencia con la temperatura fue establecida por Arrhenius( y chavita )en su ya famosa ley. El exponente n1 recibe el nombre de orden de la reacción respecto del reactivo R1 y el exponente n2 respecto del reactivo R2. El orden total viene dado por la suma de ambos (n1 + n2).

Los órdenes n1 y n2 no coinciden necesariamente con los coeficientes estequiométricos de la reacción ajustada y su determinación se efectua de forma experimental.
Para ello se estudia cómo varía la velocidad de la reacción con la concentración del reactivo considerada, y a partir de los datos obtenidos se construye la gráfica correspondiente, y se determina su ecuación empírica; esta ecuación será del tipo v = k[R]n, siendo el n resultante el orden parcial de la reacción respecto del reactivo R.

Efecto de la concentración

Por la misma razón que son más frecuentes los accidentes de tráfico en las, cuanto mayor sea el número de moléculas de los reactivos presentes en un mismo volumen más fácilmente podrán colisionar. Asimismo, cuanto mayor sea el número de colisiones que se producen en la unidad de tiempo, tanto más probable será la realización de un choque eficaz, esto es, de un choque que dé lugar a la transformación de las moléculas. De esta forma se explica el hecho experimentalmente observado, de que al aumentar la concentración de los reactivos aumente la velocidad de la reacción química.
Velocidad de formación
Es el aumento en la concentración molar del producto de una reacción por unidad de tiempo.
Velocidad de descomposición
Es la disminución en la concentración molar del reactivo por unidad de tiempo.

Dependencia de la velocidad de reacción con la concentración

Y esto es lo de Mike......

The speed of reaction is conformed by the speed of formation and the speed of decomposition. The speed does not have a constant value and depends on a lot of factors such as reagents concentration, the presence of a catalyst, the temperature of their reaction, and the contact surface with reagents and the catalyst.
The concentration is one of the most important factors in the speed, as more particles exist in the reaction, the chance of collision becomes higher, at the beginning as the concentration o freagents is higher, more collision happens and so the speed increase. As reagents disappear collsions decrease chance of collision now decrease and so does the speed.
In order To measure the speed of a reaction we need to measure either the concentration of the products or the concentration of reagents by unit of time, the units of the speed are measured in moles per second......

Quien se avienta el Resumen.........

Att:Meño

Posts : 5 Join date : 2009-02-19

jovenazoz wrote:: marco teorico agreguenle mas coas para ocmpetarlo bn

The speed of reaction is confromed by the speed of formation and the speed od sicomposition. The speed has not a constant value and depends on a lot of factors such as reagents concentration, the presence of a catalyst, the temperature of thjer eaction, and the contact surface with reagents and the catalyst.
The concentration is one of the most important factors in the speed, as more particles exist in the reaction, the chance of collision becomes higher, at the beginning as the concentration o freagents is higher, more collision happens and so the speed increase. As reagents disappear collsions decrease chance of collision now decrease and so does the speed.
In order To measure the speed of a reaction we need to measure either the concentration of the products or the concentration of reagents by unit of time, the units of the speed are measured in moles per second

olaap
pues se me hace que está bien, pero creo que tiene errores gramaticales
segun yo es reaction speed en lugar de speed of reaction
igual con speed of formation, según yo es formation speed... no se, cosas así..

klara =)

Admin Posts : 10 Join date : 2009-02-19

Key Words

Concentration
Collisions
Temperature
Catalyst
Reagents
Products
Speed
First order reaction
Second order reaction
Zero order reaction

Abstract
On this practice we saw the Velocity Reaction of the magnesium, which we placed in a Clorhidric Acid Solution at different molar concentrations. We timed with the Different molar Clorhidric Acid Concentrations, at how much time did the magnesium plates consumed itself to the end. Even though all of the groups had the Same Clorhidric Acid Concentrations, time vary from Group to Group. In this practice we could prove that the Velocity of Reaction increased as the concentration of Clorhidric Acid grew higher.

MARCO TEORICO
Theory
The velocity of chemical reactions is conformed by the velocity of formation and the velocity of decomposition. Measuring the velocity of a reaction, its one of the most important parts of applied chemistry, since it gives us the opportunity to optimize chemical processes in an efficient manner.
The Key Factors that affect the velocity of a reaction are the following:
• Temperature
• Surface of contact
• Nature of the reagents
• Concentration

On this particular case, we shall study the concentration factor.
Te reaction’s velocity it’s given by the concentration of its reagents, both multiplied by each other and then by a constant

Vrx = K [A][B]

• Where Vrx, its the velocity of a reaction in Molarity/time
• A & B, are the reagents in molar units
• And K, is the constant which’s units are given by the reagents
Concentration Effect
The concentration is one of the most important factors in the velocity of a reaction: As more particles exist in the reaction, the chance of collision becomes higher. At the beginning as the concentration of reagents its higher, more collisions happen and so the speed increases. As reagents disappear and transform into products, collision’s number decreases because there are now less particles of reagents that can interact with each other; that implies that the velocity of the reaction will decrease as well. Therefore as there are more collisions on a time basis, it exists a higher probability of an efficient crash where this will give place to a chemical transformation.
Objective
The objective of this practice is to demonstrate how with different Molar concentrations of Chlorhydric Acid, placed in contact to react with 4 magnesium plates shall dissolve at different speed and at different times proving that at different concentrations of reagents, the velocity reaction increases.

Israel Hernandez
Claudia Loy
Misael de Alba
Laura Edith Ramirez Luquin
Miguel Sanabria
Emmanuel Quintero Ruvalcaba
Citlali Contreras
Daniel De La Torre