As given in the answer by Michael, our body system consists lots of biological reactions. If a biochemical reaction in our body is too fast or too slow, it can endanger our life. There are a lot of studies involve in studying the optimization of the rate of reaction in our body. For example, if a medicine is developed to counter a specific disease, it is crucial to optimize the rate of its effect in our body.
If such medicine will release heat during reaction in our body, it is important to make the reaction is slower, therefore ensuring the patient will not experience high fewer during medication.
In other example, rate of reaction is obviously very important to the chemical industry. The rate of reaction dictates the rate of production of our daily products. How can temperature affect reaction rate? How can the rate of reaction be calculated from a graph? How do reaction rates give information about mechanisms?
What is a reaction rate constant? How do the reaction rates change as the system approaches equilibrium? Why does the rate of reaction increase with concentration? Why do rates of reaction change with pH?
See all questions in Rate of Reactions. Using the method of initial rates, we will discuss how to determine the form and order of the rate law. Next, we will probe rate laws in depth and introduce the integrated rate law as an alternative form of the simple rate law that allows us another, more simple, experimental method to determine the order of the rate law.
The integrated rate law will also allow us to determine the half-lives of chemical reactions. This produces effervescence the posh word for bubbles! Bubbles can be easily counted and comparing the number of bubbles produced over a set time when you vary another aspect of the reaction such as temperature or acid concentration allows us to see how the rate of reaction varies.
Another common A Level experiment you might encounter is the iodine clock. This time the reaction is monitored by recording how long it takes to see the solution change colour and is explained in the video below. It can help to work in pairs, one person presses the timer and another starts the reaction so you are able to start the clock at the same point for each experiment. Rates of reaction. This is the bit that makes everyone nervous; the equations! They can look complicated and sometimes like a completely different language but they are actually very useful.
They allow us to work out which reactants are responsible for the rate of reaction from very simple experimental measurements like those mentioned above.
During your exam or in the classroom you may be given a table of data which shows you how the rate of reaction changes when you vary the concentration of each of the reactants. From this information we can create a rate equation. This is the value that tells us how fast or slow a reaction is. Since the rate of reaction can be affected by a range of variables such as temperature or reactant concentration, the rate constant will also vary.
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