Explore BrainMass

Study of a first-order reaction

This content was STOLEN from BrainMass.com - View the original, and get the already-completed solution here!

In the study of a first-order reaction, A--->B, it is found that A/Ao=0.125 after one hour. The system initially consisted of 0.20 mole of a gaseous A at 25 degrees C and 1 atm. Calculate the initial rate of reaction in moles of A reacting per minute.

© BrainMass Inc. brainmass.com October 24, 2018, 7:08 pm ad1c9bdddf

Solution Preview

Rate of first order reaction=kA

We can also write dA/dt=kA
Re-arrange: ...

Solution Summary

The solution provides detailed calculations and explanations. The initial rate of reaction in moles of A reacting per minute is determined.

See Also This Related BrainMass Solution

Real-Life Models of Logarithmic Functions.

Many different kinds of data can be modeled or measured easily using exponential and logarithmic functions. For example, consider ideal gases: Pressure versus volume give a curved plot, but a log graph of pressure versus volume provides a linear plot that is easier to interpret. Log plots are also used in the study of the rates of reactions; for many reactions, the log of remaining reactant concentration versus time is linear.

For this Discussion Board, use the Library and other resources to find at least two examples of scientific data that are measured and reported using log scales. Examples can be found in such fields as chemistry, astronomy, and geology.

View Full Posting Details