About k

[IreneSeo3F]

What does k tell us? If k is a large value, what does that tell us about the reaction?

[Sahiti Annadata 3D]

K represents the reaction equilibrium constant. If K is a large value, it means the reactions favors the products.

[Hazelle Gunawan 3G]

In this case K actually refers to how fast the reaction is proceeding. A smaller k means a slower reaction while a larger k means a faster reaction.

[Manseej Khatri 2B]

Hi to add on, k also can tell you the activation energy using the Arrhenius equation.

[Eileen Quach Dis 2A]

If k is large, the concentration of products is greater than the concentration of the reactants so product formation is favored.

[Madeline Ogden 3B]

In regards to rate laws, k can also be the rate constant. The rate constant relates molar concentration of reactants to the rate of the reaction.

[Rose_Malki_3G]

If k is large that means that the forward reaction is favored because the products a more stable/favored.

[Kelly Ha 1K]

Lowercase k is associated with kinetics, where k is the rate constant that relates the rate of the reaction to the concentration of reactants. A large rate constant k would mean that the reaction is relatively fast, while a smaller rate constant k means that the reaction is relatively slow.

Uppercase K is associated with chemical equilibrium, where K is the equilibrium constant. A large equilibrium constant K (K >1) means that product formation is favored, while a smaller equilibrium constant K (K < 1) means that the reactants are favored.

[Libby Dillon - 1A]

For k involved in rate constants, a higher k means a faster rate of reaction, and a lower k means a slower rate of reaction. For equilibrium constant K, a higher value (greater than 1), product formation is favored in the forward reaction, and smaller k (less than 1), the reverse reaction is favored.

[Ephrem Gerald 2A]

The lower case k in kinetics is the rate constant and refers to how fast the reaction is proceeding. Having a large k value means the rate of the reaction is going to be faster.

[Mary Gallo 1G]

In kinetics, lowercase k represents the rate constant for a reaction. A larger rate constant means that the reaction will proceed at a faster rate. A smaller k means that the rate of the reaction is slower.
In chemical equilibrium, we use uppercase K, which represents the equilibrium constant. K = [products]/[reactants] in chemical equilibrium where each concentration is raised to the power of its stoichiometric coefficient. If this K value is large, that means that products are favored. If this K value is small, that means that reactants are favored.

[Samudrala_Vaishnavi 3A]

k is the reaction constant and tells us by how much that the rate is affected by the concentrations of the reactant beyond just looking that their orders (proportionality constant). The k value is lower at higher activation energies since the reactants tend to have less of an effect on the initial rate considering the reactions that occur, occur less spontaneously. Increasing the temperature, however, increases the k value since the forward reaction occurs more spontaneously and there is more of a relationship between the concentrations of reactants versus the initial rate of the reaction.

[Dylan_Nguyen_2C]

I think that it is important to know the distinction between uppercase and lowercase k. Uppercase K is the equilibrium constant, which is the ratio of products to reactants raised to their respective coefficients and is used in chemical equilibrium to deal with relative concentrations. Lowercase k represents the rate constant, which relates to kinetics and the rate at which a reaction proceeds, with large k values meaning a faster rate of reaction. Hope this helps

[Edgar Velazquez 2K]

K tells us which side is favored by the reaction. A larger K value means that the reaction favors the products. A smaller K value means that the reaction favors the reactants. Knowing this information also gives us clues about the rate of reaction. A large K means a faster rate while a smaller K means a slower rate.

[Mehreen 3I]

K represents the equilibrium constant. It will tell you if the reactants or products are favored in a reaction.

[Hannah Lechtzin 1K]

k or what I call "little k" is the rate constant of a reaction. A large k value will indicate a faster reaction. It is an important aspect in determining the a reactions rate law and rate at a given time. K or what I call "big K" is the equilibrium constant of a reaction, which occurs when the production rates of product and reactant are equal. A large K value indicates that the reaction favors the formation of products. These two constants are also related. K = k1/k-1. I hope this helps!

[Sophia Wendin 3L]

k or what I call "little k" is the rate constant of a reaction. A large k value will indicate a faster reaction. It is an important aspect in determining the a reactions rate law and rate at a given time. K or what I call "big K" is the equilibrium constant of a reaction, which occurs when the production rates of product and reactant are equal. A large K value indicates that the reaction favors the formation of products. These two constants are also related. K = k1/k-1. I hope this helps!

Thank you! I keep getting confused between the two.

[Colin Squire 3B]

k, when it is lower case, refers to the reaction constant. The value of k is directly proportional to the rate of the reaction, meaning that if there is a large k value, the rate of the reaction is relatively speaking, fast.

[Shruti Kulkarni 2I]

In regards to equilibrium, a large k value will tell us that at equilibrium, there will be a larger amount of products formed in comparison to reactants. In the case of kinetics, a large k value tells us that the reaction is proceeding at a fast rate.

[Kathy_Li_1H]

Hi! Lowercase k represents the rate constant, whereas upper case K represents the equilibrium constant

[derickngo3d]

If K is a large value, then products are favored.
Hope this helps!

[derickngo3d]

Be careful about the difference between k and K though.
Hope this helps!

[Mari Williams 1K]

I wish they used different variables...k and K look way too similar, esp in handwriting

[Jerry_T]

K is the equibrium constant and if K is large, then that means there are more products than reactants.
k on the other hand, is the rate constant and tells us how fast the reaction is and in which direction it is proceeding.

[Izamary Marquez 2H]

Look at the k value and compare it to the Q value. If k>Q then the reaction favors the products. If Q>k, then the reaction favors the reactants.

[Jeremy Wei 2C]

k (lowercase) refers to the rate of reaction, so a large k value will indicate a fast reaction rate.

[Chudi Onyedika 3A]

k is the rate constant. If it is higher, then the reaction happens at a faster rate.