Units of Reaction Rate

[Jeremiah Samaniego 2C]

Are the units of concentration of reactant or product (i.e. mol / L) included when finding the reaction rate?

[Tanaisha Italia 1B]

Yes, because the rate is just a constant multiplied by the change in concentration over the change in time.
Concentration = mol/L
Rate = mol/(L* seconds)

[Ramya Lakkaraju 1B]

Yes, you should not ignore the units of anything when using equations because the units must make sense in the final answer.

[Michelle Nguyen 2L]

Yup; knowing that the rate has units (mol/L*s) tells you what units you should use for k, the rate constant. For example, the rate constant for a first order reaction has units (1/s) while the rate constant for a third order reaction Rate= k[A]^3 has units L^2/(mol^2 *s). ( [A] has units mol/L)

[Adrian Lim 1G]

Yes, you should have units to see which units you need for k. Also, it is wise to always make sure to include units; even if it isn't necessary, it's nice to double check certain terms and values.

[Wayland Leung]

Are there any constants we need to use in this unit?

[snehabhargava]

we do not need to know any constants for this test

[Meredith Steinberg 2E]

We will use gas constant, R, when we talk more about activation energy and its relationship to k and A.