Chemistry - Initial concentration
'Initial concentration' refers to the initial concentration of the
reactants in aqueous solution (and pressure in gas phase reactions).
The higher the number of reactant particles in a given volume, the faster
the reaction rate. More particles increase the collision frequency and the
likelihood of fruitful collisions. The higher the concentration of aqueous
solutions or pressure of gases, the larger the number of particles per unit
As the reaction proceeds, its rate will decrease because the number of
reactant particles present decreases.
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