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Chemical Reaction

Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in ___________________?

Chemical Reaction /
Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in ___________________?

A. Blood
B. Saliva
C. Intestine
D. Gland

Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in ___________________? Read More »

Chemical Reaction

An isothermal aqueous phase reversible reaction, P ⇌ R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m3 .h is given by, r = 0.5CP – 0.125CR. A stream containing only P enters the reactor. The residence time required (in hours) for 40% conversion of P is_________________?

Chemical Reaction /
An isothermal aqueous phase reversible reaction, P ⇌ R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m3 .h is given by, r = 0.5CP – 0.125CR. A stream containing only P enters the reactor. The residence time required (in hours) for 40% conversion of P is_________________?

A. 0.80
B. 1.33
C. 1.60
D. 2.67

An isothermal aqueous phase reversible reaction, P ⇌ R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m3 .h is given by, r = 0.5CP – 0.125CR. A stream containing only P enters the reactor. The residence time required (in hours) for 40% conversion of P is_________________? Read More »

Chemical Reaction

When the reaction is dominated by intraparticle diffusion, the apparent order of reaction (nD) as measured is related to the true order (n) as ________________?

Chemical Reaction /
When the reaction is dominated by intraparticle diffusion, the apparent order of reaction (nD) as measured is related to the true order (n) as ________________?

A. nD = (n + 1)/2
B. nD = n/2
C. nD = n + 1
D. None of these

When the reaction is dominated by intraparticle diffusion, the apparent order of reaction (nD) as measured is related to the true order (n) as ________________? Read More »

Chemical Reaction

The equilibrium constant for the reversible reaction as shown in the bellow figure, is affected by the__________________?

Chemical Reaction /
The equilibrium constant for the reversible reaction as shown in the bellow figure, is affected by the__________________?

A. Temperature of the system
B. Presence or absence of inerts
C. Pressure of the system
D. Kinetics of the reaction

The equilibrium constant for the reversible reaction as shown in the bellow figure, is affected by the__________________? Read More »

Chemical Reaction