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Factors affecting the Rate of Chemical Reactions, Muhammad Haseeb Zahid -…
Factors affecting the Rate of Chemical Reactions
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Concentration:
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Increasing concentration will increase rate of chemical reaction
And this is because more particles come together and cause more frequent collisions and this increase rate of reaction
Concentration is the measure of how much a substance is mixed with another substance
Example: Reaction of Hydrochloric Acid and Calcium Carbonate, CaCO3 + 2HCL ----> CaCL2 + H2O + CO2
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Temperature
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The rate double in each 10 Degree Celsius rise
Increasing temperature will increase rate of chemical reaction
This happens because kinetic energy (speed of moving) of molecules increasing resulting in more collisions and this result in an increase rate of reaction
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Surface Area
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This happens because here the size of particles will be be decreased and they will they collide and there will be an increase in rate of collisions resulting in increase in rate of reaction
Sometimes increase in surface area can result in danger like a spark from machine can result in an explosion on wood dust(it have large surface area)
Increasing Surface Area will increase rate of chemical reaction
Example: CaCO3, Calcium Carbonate as small particles and powder.
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Catalyst
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Adding catalyst in a chemical reaction increases the rate of chemical reaction.
Catalyst makes a new way for the chemicals to react with using less energy. If a small amount of catalyst is added, than that can also increase rate of reaction.
Catalyst is a substance which speeds a chemical reaction without itself being used up or changed.
Example: Enzymes are biological catalysts.
Muhammad Haseeb Zahid
10-B
Chemistry Project