Which one of the following factors does not affect the rate of chemical reaction?
-The enthalpy change of the reaction
*Rate of reaction is rate at which the concentration of product increases per volume over a period of time. As the rate of reaction carries on, the rate starts to decrease because the concentration of the limiting reagent decreases as some of it has been used. At the end , the curve is horizontal as there are no more reactants to create a reaction (no concentration) but they are now in forms of the product instead - there is no HCL for the CaCO3 to react. (From test Graph)
Calcium Chloride is an aqueous solution (aq)
Remember that in a table, the number of decimal places should all be the same
Curved graphs should always be drawn without a ruler
Other factors that decrease the rate of reaction:
Lower temperature
Smaller Surface area
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