Theories of Catalysis
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CHXII05:SURFACE CHEMISTRY

320939 Role of desorption in the process of catalysis

1 The surface is not available for the reaction to occur.
2 Making the surface available again for more reaction to occur.
3 Half of the surface is available for the reaction to occur.
4 All of these
CHXII05:SURFACE CHEMISTRY

320940 Arrange the following diagrams in correct sequence of steps involved in the mechanism of catalyst, in accordance with modern adsorption theory.
supporting img

1 \({\text{I}} \to {\text{ III}} \to {\text{II}} \to {\text{IV }} \to {\text{V}}\)
2 \({\text{I}} \to {\text{II}} \to {\text{III}} \to {\text{V}} \to {\text{IV}}\)
3 \({\text{I }} \to {\text{II}} \to {\text{III}} \to {\text{IV}} \to {\text{V}}\)
4 \({\text{I }} \to {\text{III}} \to {\text{II}} \to {\text{V}} \to I{\text{V}}\)
NCERT Exemplar
CHXII05:SURFACE CHEMISTRY

320941 Intermediate compound theory is the mechanism of

1 Positive catalysis
2 Negative catalysis
3 Homogeneous catalysis
4 Heterogeneous catalysis
CHXII05:SURFACE CHEMISTRY

320942 According to adsorption theory of catalysis, the incorrect statement is

1 In the process of adsorption, the activation energy of the molecules is large
2 Adsorption produces heat which increases the speed of reaction
3 Adsorption lowers the activation energy of the reaction
4 All are incorrect
CHXII05:SURFACE CHEMISTRY

320943 According to adsorption theory of catalysis, the reaction rate increases, because

1 Adsorption produces heat which increases the rate of reaction
2 In the process of adsorption, the kinetic energy of the molecules increases
3 The concentration of reactants at the active centers becomes high due to adsorption
4 The activation energy of the reaction becomes high due to adsorption
NEET DIGITAL LIBRARY
CHXII05:SURFACE CHEMISTRY

320939 Role of desorption in the process of catalysis

1 The surface is not available for the reaction to occur.
2 Making the surface available again for more reaction to occur.
3 Half of the surface is available for the reaction to occur.
4 All of these
CHXII05:SURFACE CHEMISTRY

320940 Arrange the following diagrams in correct sequence of steps involved in the mechanism of catalyst, in accordance with modern adsorption theory.
supporting img

1 \({\text{I}} \to {\text{ III}} \to {\text{II}} \to {\text{IV }} \to {\text{V}}\)
2 \({\text{I}} \to {\text{II}} \to {\text{III}} \to {\text{V}} \to {\text{IV}}\)
3 \({\text{I }} \to {\text{II}} \to {\text{III}} \to {\text{IV}} \to {\text{V}}\)
4 \({\text{I }} \to {\text{III}} \to {\text{II}} \to {\text{V}} \to I{\text{V}}\)
NCERT Exemplar
CHXII05:SURFACE CHEMISTRY

320941 Intermediate compound theory is the mechanism of

1 Positive catalysis
2 Negative catalysis
3 Homogeneous catalysis
4 Heterogeneous catalysis
CHXII05:SURFACE CHEMISTRY

320942 According to adsorption theory of catalysis, the incorrect statement is

1 In the process of adsorption, the activation energy of the molecules is large
2 Adsorption produces heat which increases the speed of reaction
3 Adsorption lowers the activation energy of the reaction
4 All are incorrect
CHXII05:SURFACE CHEMISTRY

320943 According to adsorption theory of catalysis, the reaction rate increases, because

1 Adsorption produces heat which increases the rate of reaction
2 In the process of adsorption, the kinetic energy of the molecules increases
3 The concentration of reactants at the active centers becomes high due to adsorption
4 The activation energy of the reaction becomes high due to adsorption
Join With Us for More Updates
CHXII05:SURFACE CHEMISTRY

320939 Role of desorption in the process of catalysis

1 The surface is not available for the reaction to occur.
2 Making the surface available again for more reaction to occur.
3 Half of the surface is available for the reaction to occur.
4 All of these
CHXII05:SURFACE CHEMISTRY

320940 Arrange the following diagrams in correct sequence of steps involved in the mechanism of catalyst, in accordance with modern adsorption theory.
supporting img

1 \({\text{I}} \to {\text{ III}} \to {\text{II}} \to {\text{IV }} \to {\text{V}}\)
2 \({\text{I}} \to {\text{II}} \to {\text{III}} \to {\text{V}} \to {\text{IV}}\)
3 \({\text{I }} \to {\text{II}} \to {\text{III}} \to {\text{IV}} \to {\text{V}}\)
4 \({\text{I }} \to {\text{III}} \to {\text{II}} \to {\text{V}} \to I{\text{V}}\)
NCERT Exemplar
CHXII05:SURFACE CHEMISTRY

320941 Intermediate compound theory is the mechanism of

1 Positive catalysis
2 Negative catalysis
3 Homogeneous catalysis
4 Heterogeneous catalysis
CHXII05:SURFACE CHEMISTRY

320942 According to adsorption theory of catalysis, the incorrect statement is

1 In the process of adsorption, the activation energy of the molecules is large
2 Adsorption produces heat which increases the speed of reaction
3 Adsorption lowers the activation energy of the reaction
4 All are incorrect
CHXII05:SURFACE CHEMISTRY

320943 According to adsorption theory of catalysis, the reaction rate increases, because

1 Adsorption produces heat which increases the rate of reaction
2 In the process of adsorption, the kinetic energy of the molecules increases
3 The concentration of reactants at the active centers becomes high due to adsorption
4 The activation energy of the reaction becomes high due to adsorption
For More Updates join with Us
CHXII05:SURFACE CHEMISTRY

320939 Role of desorption in the process of catalysis

1 The surface is not available for the reaction to occur.
2 Making the surface available again for more reaction to occur.
3 Half of the surface is available for the reaction to occur.
4 All of these
CHXII05:SURFACE CHEMISTRY

320940 Arrange the following diagrams in correct sequence of steps involved in the mechanism of catalyst, in accordance with modern adsorption theory.
supporting img

1 \({\text{I}} \to {\text{ III}} \to {\text{II}} \to {\text{IV }} \to {\text{V}}\)
2 \({\text{I}} \to {\text{II}} \to {\text{III}} \to {\text{V}} \to {\text{IV}}\)
3 \({\text{I }} \to {\text{II}} \to {\text{III}} \to {\text{IV}} \to {\text{V}}\)
4 \({\text{I }} \to {\text{III}} \to {\text{II}} \to {\text{V}} \to I{\text{V}}\)
NCERT Exemplar
CHXII05:SURFACE CHEMISTRY

320941 Intermediate compound theory is the mechanism of

1 Positive catalysis
2 Negative catalysis
3 Homogeneous catalysis
4 Heterogeneous catalysis
CHXII05:SURFACE CHEMISTRY

320942 According to adsorption theory of catalysis, the incorrect statement is

1 In the process of adsorption, the activation energy of the molecules is large
2 Adsorption produces heat which increases the speed of reaction
3 Adsorption lowers the activation energy of the reaction
4 All are incorrect
CHXII05:SURFACE CHEMISTRY

320943 According to adsorption theory of catalysis, the reaction rate increases, because

1 Adsorption produces heat which increases the rate of reaction
2 In the process of adsorption, the kinetic energy of the molecules increases
3 The concentration of reactants at the active centers becomes high due to adsorption
4 The activation energy of the reaction becomes high due to adsorption
NEET DIGITAL LIBRARY
CHXII05:SURFACE CHEMISTRY

320939 Role of desorption in the process of catalysis

1 The surface is not available for the reaction to occur.
2 Making the surface available again for more reaction to occur.
3 Half of the surface is available for the reaction to occur.
4 All of these
CHXII05:SURFACE CHEMISTRY

320940 Arrange the following diagrams in correct sequence of steps involved in the mechanism of catalyst, in accordance with modern adsorption theory.
supporting img

1 \({\text{I}} \to {\text{ III}} \to {\text{II}} \to {\text{IV }} \to {\text{V}}\)
2 \({\text{I}} \to {\text{II}} \to {\text{III}} \to {\text{V}} \to {\text{IV}}\)
3 \({\text{I }} \to {\text{II}} \to {\text{III}} \to {\text{IV}} \to {\text{V}}\)
4 \({\text{I }} \to {\text{III}} \to {\text{II}} \to {\text{V}} \to I{\text{V}}\)
NCERT Exemplar
CHXII05:SURFACE CHEMISTRY

320941 Intermediate compound theory is the mechanism of

1 Positive catalysis
2 Negative catalysis
3 Homogeneous catalysis
4 Heterogeneous catalysis
CHXII05:SURFACE CHEMISTRY

320942 According to adsorption theory of catalysis, the incorrect statement is

1 In the process of adsorption, the activation energy of the molecules is large
2 Adsorption produces heat which increases the speed of reaction
3 Adsorption lowers the activation energy of the reaction
4 All are incorrect
CHXII05:SURFACE CHEMISTRY

320943 According to adsorption theory of catalysis, the reaction rate increases, because

1 Adsorption produces heat which increases the rate of reaction
2 In the process of adsorption, the kinetic energy of the molecules increases
3 The concentration of reactants at the active centers becomes high due to adsorption
4 The activation energy of the reaction becomes high due to adsorption