Niwatori's Corner (Equilibrium Constant!)

O hayao gozaimasu

Niwatori-san with Chemistry once again round 2 but this time I'm elaborating my text in order to make the premise more understanding.

Bear with me if you don't understand.... (I'll do my best for ya guys and gals)

Currently in class we were learning about the Equilibrium Constant in the form of small K and big K. There are slight differences to the small K constant and the big K constant.

Well before I get into detail over the K constants there are a few definitions worth checking over
these consist of:

** Note that most of the info is in the handout Grade 12 CHEMISTRY : CHEMICAL EQUALIBRIUM the 1st page has Defining Equilibrium right below the title above.**

Dynamic Equilibrium - This is the state where the forward process is equal to the reverse process. The system is not actually stopping but always moving constantly showing a constant opposition.

Physical Equilibrium - A reversible physical process is where the rate of forward is equal to the rate of reverse.

**** Keep note the only time a reversible reaction can be in equalibrium is in a closed system**** "closed systems keep particles in and other particles to stay out. A form of consistency is shown between the particles eg. vapor vs condensation

****Equilibriums by the way look/seem unmoving but they actually are in motion****

Equilibrium law and Equilibrium Constant - Known as the Law of mass action/Equilibrium law by Cato Goldberg and Peter Waage in 1864. The Equilibrium law is suggested to be a ratio between the concentrations of the products to the reactants.
A value is then given from the ratios and this numerical value is the Equilibrium Constant

(Ok enough of the definitions now onto some real work! *raises sleeves up to shoulder length*)

****Keep note if Kc/Equalibrium constant what the value is equal to; this value determines either the reactants/products being favored in which
this is as follows: Kc = 1 reactants & products neither favored
Kc = more than 1; products concentration greater and is favored
Kc = less than 1; reactants concentration greater and is favored


I'll just head onto showing you how to get Equalibrium Concentrations since that part was from yesturday and it seems like we should note it
(Getting the Kc should be no problem but if you don't remember just ask around!)

We have info:
Set up an ICE table (ICE is abbriviated in to Intial concentration(I), Delta"change in" Concentrations(C) and equilibruim concentrations (E)

for example we are given 2 reactants with equal moles

I 2.00 2.00 0

C -x -x +2x

E 2 - x 2 - x 2x


Ill get into detail with this if you want later time is of an essense

Niwatori-san signing off--->

Next Scribe is miss Kayla! =D

*passes baton and then skoots away*

Niwatori-san's Corner (Kinetics intro)

In the past class before the Chemistry lab in which labeled "Factors Affecting the Rate of a Reaction"

We were introduced to the Kinetics unit.

A handout was handed out to display terms we should know.

Such terms included:

Rate
Rate is the speed in a chemical reaction of the reactants amount of products made.
This is usually observed experimentally by a certain chemical property.

The measurement of Rate can be varied depending how and what is being measured for the chemical reaction.

Here's a definition briefing of the terms that can be used to measure rate.

Temperature
Temperature is labeled (ºC/min)
While the reaction is on going the temperature increases. If heat is produced at a fast rate then the a higher rate for the chemical reaction will occur.

Pressure
Measured in (kPa/s or mmHg/s)

The more GASEOUS CARBON made in a chemical reaction the more the pressure increases giving an increase in rate.

Mass
In the form (g of C/min)

In a chemical reaction, with more reactants being used up and converted to gas; resulting in a loss of reactants/increase in mass of the product

Other
Other forms that rate can be label are colour change, pH change, change in conductivity, and etcetra etcetra over period of time. All are a change over time since the rate is determined during the experiment is undergo

-Quoting the text handout-
"Rate is usually described in terms of change in concentration of reactant or product over time." =)

Rate can be found from this formula in question :
RATE = change in concentration
change in time




And that concludes that class haeng un (korean for good luck) in your future studies

Niwatori-san signing off Yassir to scribe for Tuesday's class

"Close encounters are the best for finding a solution/comfort without and casualty"
-Niwatori-san-