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Reaction Time
Slow reactions=Long reaction times
Fast reactions= Short reaction times
The time taken between a reaction starting and stopping
A reaction stops when all the reactants have been used up
is reaction would start when the Mg and HCl were mixed together, the release of hydrogen would cause bubbling. If the acid was in excess the reaction and therefore the bubbling would stop when the magnesium was used up.
Measuring Rates
Rate of reaction measures the amount of product created in a fixed amount of time
Slow reaction=> Small amount of product in a long time
Fast reaction=> Large amount of product in a short time
Product----------- = Rate of Reaction or the slope of a product time-graphTime
The reaction starts when the calcium carbonate and acid are mixed together.
CO2 pushes the plunger out and it's volume is read at regular intervals.
The reactant that is all used up is the limiting reactant in this example it might be calcium carbonate so when it is all used up some acid will be left over.
The amount of product formed is directly proportional to the limited reaction
Reaction Rate and Temperature
The rate of reaction depends on the temperature of the reaction mixture. As the temperature increases the rate of reaction increases.
For a reaction to happen reactant particles most collide with each other. The more frequent collisions are the faster the reaction. The particles have more energy at higher temperatures so they move faster causing more collisions and therefore a faster reaction
Reaction Time
Measuring the Rates of Reactions
Reaction Rate and Temperature
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