Rate
is defined as the change in the amount of the
substance or concentration of the substance with respect to time.
Reactants
→ Products
During
the progress of a chemical reaction,
Concentration
of the reactants are decreases with time and
concentration of products increases with time.
The
following image shows diagrammatic representation of RATE
OF REACTION.
In
above chemical reaction,
● Represents the REACTANT
molecules
● Represnts the PRODUCT
molecules
Rate
of a reaction for chemical reactions,
Units of Rate of Reaction:
Units
= Concentration.time¯¹
= Mole.Lit¯¹.time¯¹
= Mole.dm¯³.time¯¹
Time
can be expressed in terms of Years, Months, Days, Hours, Minutes, and Seconds.
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