PHYSICAL CHEMISTRY IN BRIEF

CHAP. 9: CHEMICAL KINETICS [CONTENTS] 321 9.7 Chemical reactors. A chemical reactor is a device, most often industrial, in which ...

CHAP. 9: CHEMICAL KINETICS [CONTENTS] 322 Example A first-order reaction A k → P, wherek = 0.1 hour−^1 , proceeds in a batch rea ...

CHAP. 9: CHEMICAL KINETICS [CONTENTS] 323 Example Every hour, two trucks loaded with clay bricks enter a brick kiln and two truc ...

CHAP. 9: CHEMICAL KINETICS [CONTENTS] 324 In a stirred flow reactor the concentrations of the reactants and the reaction rate ar ...

CHAP. 9: CHEMICAL KINETICS [CONTENTS] 325 Solution The specification for the batch reactor is the same as in the Example in9.7.2 ...

CHAP. 9: CHEMICAL KINETICS [CONTENTS] 326 9.8 Catalysis. 9.8.1 Basic terms Acatalystis a substance whose presence changes the me ...

CHAP. 9: CHEMICAL KINETICS [CONTENTS] 327 SubstanceXis an intermediate for which the Bodenstein principle applies [see9.5.5] dcX ...

CHAP. 9: CHEMICAL KINETICS [CONTENTS] 328 not the rate-determining process. If the diffusion is slow, the transport may be accel ...

CHAP. 9: CHEMICAL KINETICS [CONTENTS] 329 where ES is a complex of the enzyme with the substrate. It is assumed that the concent ...

CHAP. 10: TRANSPORT PROCESSES [CONTENTS] 330 Chapter 10 Transport processes This chapter deals with thermal conductivity, viscos ...

CHAP. 10: TRANSPORT PROCESSES [CONTENTS] 331 Example Let us have a metal rod. One end of this rod has an initial temperature of ...

CHAP. 10: TRANSPORT PROCESSES [CONTENTS] 332 Example In the preceding example, the flux was the amount of heat, related to unit ...

CHAP. 10: TRANSPORT PROCESSES [CONTENTS] 333 10.2 Heat flow—thermal conductivity. 10.2.1 Ways of heat transfer. Heat may be tran ...

CHAP. 10: TRANSPORT PROCESSES [CONTENTS] 334 U Main unit:J K−^1 m−^1 s−^1. 10.2.3.1 Dependence on state variables. According to ...

CHAP. 10: TRANSPORT PROCESSES [CONTENTS] 335 Solution We use equation (10.5) rewritten into the form dQ=−S λ dT dz dτ and integr ...

CHAP. 10: TRANSPORT PROCESSES [CONTENTS] 336 10.3 Flow of momentum—viscosity 10.3.1 Newton’s law Let us consider a fluid flowing ...

CHAP. 10: TRANSPORT PROCESSES [CONTENTS] 337 10.3.2 Viscosity. Viscosity is the measure of internal friction between molecules i ...

CHAP. 10: TRANSPORT PROCESSES [CONTENTS] 338 without any internal friction. It would flow out through the smallest possible hole ...

CHAP. 10: TRANSPORT PROCESSES [CONTENTS] 339 Example A total of 90.2 cm^3 of air flew through a tube with a length of one metre ...

CHAP. 10: TRANSPORT PROCESSES [CONTENTS] 340 10.4 Flow of matter—diffusion Diffusionis a process during which concentrations are ...