Firstly the substrate concentration increases the rate of reaction also increases but at a certain limit it will stop to increase by adding up the substrate. By raising the enzyme concentration, the maximum reaction rate considerably improves.
The rate of a chemical reaction increases with respect to the substrate concentration increases. Enzymes can exceedingly promote the rate of a reaction. Enzymes convert saturated when the substrate concentration is high.
The chemical equilibrium is a dynamic one. Two reactions are happening symultaneously: the forward reaction (H₂O → H₂ + O₂) ,to the right, and the reverse reaction (H₂O ← H₂ + O₂), to the left. At equilibrium both reactions have the same rate, which makes that the total, measurable quantity of reactants and products remain constant.
In the figure you see:
The vertical axis measures concentration.
The horizontal axis measures time (seconds).
The two blue lines, the concentrations of H₂ and O₂, become flat (reach a zero slope) between 4 and 5 seconds.
The red line, the concentration of H₂O, becomes flat, also, between 4 and 5 seconds.
Hence, the concentrations of the reactant and the products do not change after that time meaning that the reaction has reached the equilibrium at about 4.5 seconds.
If all the reactants will react and become products, the mass will be 12.5 g. Because the mass of the matter amount will not change during the reaction.
