<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Dismiss
Skip Navigation
Our Terms of Use (click here to view) and Privacy Policy (click here to view) have changed. By continuing to use this site, you are agreeing to our new Terms of Use and Privacy Policy.

Chemical Reaction Rate

Calculating how fast a reaction occurs

Atoms Practice
Estimated4 minsto complete
%
Progress
Practice Chemical Reaction Rate
Practice
Progress
Estimated4 minsto complete
%
Practice Now
Chemical Reaction Rate

Feel free to modify and personalize this study guide by clicking "Customize."

The rate, or speed, at which chemical reaction occur can vary widely. A reaction rate is the change in concentration of a reactant or product with time.

For example, say that substance A underwent a reaction with its concentration decreasing. The rate of reaction can be expressed as:

rate=Δ[A]Δt=[A]final[A]initialΔt

Note: delta (∆) means "the change in," the brackets around the A refers to the concentration in molarity (M) of A, and a negative sign is used in this case because we know that the concentration of A is decreasing.

If you started with 1.10 M of A and you only had 0.88 M after 15.0 seconds, what would the reaction rate be? (To check your answer, highlight the following: 0.015 M/s)

If your initial concentration of hydrochloric acid (HCl) is 2.14 and the rate of reaction after 11.0 seconds is 0.012 M/s, what is your final concentration of HCl? (To check your answer, highlight the following: 2.01 M)

You can click here to find more information on chemical reaction rates and check your answers.

My Notes/Highlights Having trouble? Report an issue.

Color Highlighted Text Notes
Please to create your own Highlights / notes
Show More

Image Attributions

Explore More

Sign in to explore more, including practice questions and solutions for Chemical Reaction Rate.
Please wait...
Please wait...