Surface Chemistry MCQ Quiz

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Surface Chemistry basics

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Surface Chemistry MCQ QuizVersión en línea Surface Chemistry basics por magda abou-elanwar 1 What does surface chemistry study? a phenomena occurring at the surface or interface b properties of gases only c reactions inside the bulk d bulk properties of materials 2 Which are the types of interfaces that surface chemistry deals with? a Liquid-Liquid and Gas-Gas b Gas-Liquid, Liquid-Solid, Gas-Solid, Solid-Solid c Only Gas-Liquid and Gas-Solid d Solid-Liquid only 3 What term describes the force arising from the attraction between molecules at the interface? a Vapour Pressure b Surface Tension c Capillary Action d Adhesion 4 Adsorption is defined as: a absorption into the bulk b diffusion through a membrane c evaporation from the surface d concentration or assimilation of gas or liquid at the surface of a solid or liquid in close contact 5 Which statement correctly distinguishes absorption from adsorption? a Both are bulk phenomena b Absorption is a bulk phenomenon; adsorption is a surface phenomenon c Adsorption is bulk, absorption is surface d Both are surface phenomena with the same rate 6 In gas-solid adsorption, what is the thermodynamic relation for Gibbs Free Energy (at constant temperature and pressure)? a ∆G = ∆H + ∆S b ∆G = ∆H + T∆S c ∆G = ∆S - T∆H d ∆G = ∆H - T∆S, ∆H highly negative > T∆S (i.e. ∆G < 0) (Spontaneous reaction) 7 Types of adsorption are categorized as physical adsorption and chemical adsorption. Which is true about physical adsorption? a Desorption very difficult, high temperature dependence b Weak IMF, low enthalpy of adsorption, reversible, multi-layered, low energy of activation c Specific, irreversible, single-layered, high temperature dependence d Strong IMF, high enthalpy of adsorption, irreversible, mono-layered, high energy of activation 8 Which factors affect adsorption? a Temperature, Pressure/Concentration, Surface Area, Nature of Adsorbent and Adsorbate b Only Surface Area and Nature of Adsorbent c Only Temperature and Pressure d Time and Light exposure

Surface Chemistry MCQ QuizVersión en línea

Surface Chemistry basics

por magda abou-elanwar

What does surface chemistry study?

phenomena occurring at the surface or interface

properties of gases only

reactions inside the bulk

bulk properties of materials

Which are the types of interfaces that surface chemistry deals with?

Liquid-Liquid and Gas-Gas

Gas-Liquid, Liquid-Solid, Gas-Solid, Solid-Solid

Only Gas-Liquid and Gas-Solid

Solid-Liquid only

What term describes the force arising from the attraction between molecules at the interface?

Vapour Pressure

Surface Tension

Capillary Action

Adhesion

Adsorption is defined as:

absorption into the bulk

diffusion through a membrane

evaporation from the surface

concentration or assimilation of gas or liquid at the surface of a solid or liquid in close contact

Which statement correctly distinguishes absorption from adsorption?

Both are bulk phenomena

Absorption is a bulk phenomenon; adsorption is a surface phenomenon

Adsorption is bulk, absorption is surface

Both are surface phenomena with the same rate

In gas-solid adsorption, what is the thermodynamic relation for Gibbs Free Energy (at constant temperature and pressure)?

∆G = ∆H + ∆S

∆G = ∆H + T∆S

∆G = ∆S - T∆H

∆G = ∆H - T∆S, ∆H highly negative > T∆S (i.e. ∆G < 0) (Spontaneous reaction)

Types of adsorption are categorized as physical adsorption and chemical adsorption. Which is true about physical adsorption?

Desorption very difficult, high temperature dependence

Weak IMF, low enthalpy of adsorption, reversible, multi-layered, low energy of activation

Specific, irreversible, single-layered, high temperature dependence

Strong IMF, high enthalpy of adsorption, irreversible, mono-layered, high energy of activation

Which factors affect adsorption?

Temperature, Pressure/Concentration, Surface Area, Nature of Adsorbent and Adsorbate

Only Surface Area and Nature of Adsorbent

Only Temperature and Pressure

Time and Light exposure

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Surface Chemistry MCQ Quiz

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Surface Chemistry MCQ QuizVersión en línea

por magda abou-elanwar

What does surface chemistry study?

Which are the types of interfaces that surface chemistry deals with?

What term describes the force arising from the attraction between molecules at the interface?

Adsorption is defined as:

Which statement correctly distinguishes absorption from adsorption?

In gas-solid adsorption, what is the thermodynamic relation for Gibbs Free Energy (at constant temperature and pressure)?

Types of adsorption are categorized as physical adsorption and chemical adsorption. Which is true about physical adsorption?

Which factors affect adsorption?

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