Reaction rate measures how quickly reactants are converted to products, expressed in concentration per unit time.The rate is calculated as the negative change in concentration divided by the change in time.Let's look at an example where the concentration changes from 4.0 molar to 2.0 molar over 10 seconds.We can calculate the average reaction rate by plugging these values into our formula.Now let's examine how concentration changes over time in a typical reaction.The average rate can be found by measuring the slope between two points on the curve.The instantaneous rate is the slope of the tangent line at a single point, showing the rate at that exact moment.Let's compare average and instantaneous rates more closely.The average rate gives us the overall speed of the reaction over a time interval, while the instantaneous rate tells us how fast the reaction is proceeding at any specific moment.
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