Catalyst
A catalyst usually speeds up the rate of reaction, although it is not consumed in the reaction. Oxidation of sulphur dioxide (SO 2 ) to sulphur trioxide (SO 3 ) is a very slow reaction. However, this reaction accelerates in the presence o..
REACTION RATES
Rate of reaction Concentration, temperature, and pressure - their effect on reaction rates Role a catalyst in reaction rates Definition and role of activation energy in a chemical reactio..
REACTION RATES
Temperature and heat flow in terms of the motion of molecules (or atoms) Rate of reaction Concentration, temperature, and pressure - their effect on reaction rates Role a catalyst in reaction rates Definition a..
Catalyst
Finely divided Fe is used as a catalyst to accelerate the reaction at optimum temperature. The catalyst is mixed with small amounts of promoter- molybdenum to enhance the efficiency of the catalyst. ..
Finely divided Fe is used as a catalyst to accelerate the reaction at optimum temperature. The catalyst is mixed with small amounts of promoter- molybdenum to enhance the efficiency of the catalyst. ..Effect of catalyst
A catalyst has no effect on the value of the equilibrium constant of a reaction. This is because, a catalyst affects the rates of forward and backward reactions to the same extent. A catalyst however, helps in attaining the state of equil..
Effect of Catalyst
Catalysts are substances, which alter the rate of chemical reactions without undergoing any overall chemical change themselves. In the manufacture of ammonia, iron is used as a catalyst and it enhances the rate of this reaction. as a h..
Catalysts are substances, which alter the rate of chemical reactions without undergoing any overall chemical change themselves. In the manufacture of ammonia, iron is used as a catalyst and it enhances the rate of this reaction. as a h..Presence of a Catalyst
A catalyst is a substance that increases the rate of chemical reaction without itself undergoing any change. Examples: Hydrogenation of oils to form fats takes place faster, in presence of nickel. Decomposition of potassium chlorate (KClO 3 ) is greatly accelerated ..
Reaction Rates- Rate of a Chemical Reaction
Rates of chemical reaction depends on the inherent characteristics or nature of the reactants. That is the reason, why some reactions are fast while others are slow. For E.g., oxidation of ferrous ion by KMNO 4 (potassium permanganate) in acidic medium is fast, while t..
Rates of chemical reaction depends on the inherent characteristics or nature of the reactants. That is the reason, why some reactions are fast while others are slow. For E.g., oxidation of ferrous ion by KMNO 4 (potassium permanganate) in acidic medium is fast, while t..Surface Area of a Solid Reactant or Catalyst
In heterogenous reactions where one of the phase is a solid, the surface area of the solid affects the rate of a reaction. An increase in surface area leads to an increase in the rate of a reaction. For e.g., lycopodium powder is easily ignited to p..
Factors Affecting the Rate of a Reaction
The rate of reaction depends on the following factors: Concentration of the reactants Surface area of the reactants Temperature Catalyst Lig..
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