Презентация на тему Biochemical reaction kinetics

Содержание

2. Chemical kinetics studies the rate and mechanism of chemical reactions
3. In homogeneous reactions all the reactants
4. Single-stage reactions are called simple (or elementary)
5. The dependence of the reaction rate on
6. Mathematical expression of the law of mass
7. Molecularity of the reaction is determined by
8. Arrenius Equation establishes a connection
9. Catalysis is the change of chemical reactions
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Chemical kinetics studies the rate and mechanism of chemical reactions

Zaporizhzhya State Medical University Analytical Chemistry Department

In homogeneous reactions all the reactants exist in the same phase

Single-stage reactions are called simple (or elementary) reactions. Multistage reactions include few

The dependence of the reaction rate on the concentration of reactants is

Mathematical expression of the law of mass action is called akinetic equation

Molecularity of the reaction is determined by the number of molecules which

Arrenius Equation establishes a connection between the reaction rate constant,

Catalysis is the change of chemical reactions rate under the influence of

Enzymes are catalysts of the chemical reactions in the body. An enzyme

Слайды презентации

Слайд 2 Chemical kinetics studies the rate and mechanism of

chemical reactions

Слайд 3 In homogeneous reactions all the reactants exist in

In homogeneous reactions all the reactants exist in the same

the same phase in which the reaction itself occurs.

Na2CO3 + HCl ↔ NaHCO3 + NaCl Heterogeneous reactions take place only in the interphase. Fe + HCl⭢FeCl2 +H2

Слайд 4

Single-stage reactions are called simple
(or elementary) reactions.

Single-stage reactions are called simple (or elementary) reactions. Multistage reactions include

Multistage reactions include few simple reactions and are called

complex
(or non-elementary) reactions.

All biochemical reactions are non-elementary.

Слайд 5 The dependence of the reaction rate on the

The dependence of the reaction rate on the concentration of reactants

concentration of reactants is described by the law of

mass action discovered by N.Beketov, C. Guldberg and P. Waage in 1967:

«At constant temperature the rate of chemical reaction is in direct proportion to the product of reactant concentrations in the degree of their stoichiometric coefficients».

Слайд 6 Mathematical expression of the law of mass action

Mathematical expression of the law of mass action is called akinetic

is called a
kinetic equation
or
rate law of

the reaction.

Слайд 7 Molecularity of the reaction
is determined by the

number of molecules which interact and take part in

an elementary act of the reaction.

Слайд 8 Arrenius Equation establishes a connection between the reaction

rate constant, activation energy and temperature:

e is base

of natural logarithm;
R is universal gas constant (8.314 J / mol · K);
T is absolute temperature, K;
A is pre-exponential factor.

Слайд 9 Catalysis is the change of chemical reactions rate

Catalysis is the change of chemical reactions rate under the influence

under the influence of substances, the amount and nature

of which, after completion of the reaction are the same as before the reaction.

Catalyst is a substance that influences the rate of chemical processes without changing its own chemical composition.