For identical flow rate, feed composition and for elementary first order reactions, 'N' equal sized mixed reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for constant density systems. This is true, when the value of 'N' is

Chemical Reaction Engineering
For identical flow rate, feed composition and for elementary first order reactions, 'N' equal sized mixed reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for constant density systems. This is true, when the value of 'N' is

≥1

1

∞

>1

≥1

1

∞

>1

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Chemical Reaction Engineering
The effectiveness factor for large value of Thiele modulus (L√(K/D1)) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm²/second)

L√(K/D1)

∞

1

1/(L√(K/D1))

L√(K/D1)

∞

1

1/(L√(K/D1))

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Chemical Reaction Engineering
The equilibrium constant K of a chemical reaction depends on

Pressure only

Ratio of reactants

Temperature and pressure

Temperature only

Pressure only

Ratio of reactants

Temperature and pressure

Temperature only

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Chemical Reaction Engineering
If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is

3

1

0

2

3

1

0

2

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Chemical Reaction Engineering
N' plug flow reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for __________ order reactions.

Third

Second

First

Any

Third

Second

First

Any

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Chemical Reaction Engineering
For the liquid phase parallel reactions:R, rR = K?.CA2; E? = 80 KJ/moleS, rS = K?.CA ; E? = 120 KJ/mole The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at

Low temperature in a CSTR

High temperature in a PFR

High temperature in a CSTR

Low temperature in a PFR

Low temperature in a CSTR

High temperature in a PFR

High temperature in a CSTR

Low temperature in a PFR

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Chemical Reaction Engineering

Chemical Reaction Engineering The effectiveness factor for large value of Thiele modulus (L√(K/D1)) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm²/second)

Chemical Reaction Engineering The equilibrium constant K of a chemical reaction depends on

Chemical Reaction Engineering If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is

Chemical Reaction Engineering N' plug flow reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for __________ order reactions.

Chemical Reaction Engineering For the liquid phase parallel reactions:R, rR = K?.CA2; E? = 80 KJ/moleS, rS = K?.CA ; E? = 120 KJ/mole The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at

Chemical Reaction Engineering
The effectiveness factor for large value of Thiele modulus (L√(K/D1)) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm²/second)

Chemical Reaction Engineering
The equilibrium constant K of a chemical reaction depends on

Chemical Reaction Engineering
If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is

Chemical Reaction Engineering
N' plug flow reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for __________ order reactions.

Chemical Reaction Engineering
For the liquid phase parallel reactions:R, rR = K?.CA2; E? = 80 KJ/moleS, rS = K?.CA ; E? = 120 KJ/mole The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at