Reaction Kinetics RT

With increase of 10⁰C temperature the rate of reaction doubles. This increase in the rate of reaction is due to

• Decreasing in activation energy of reaction

• Decrease in the number of collisions between reactants molecules.

• Increase in activation energy of reactants

• Increase in number of effective collisions

When reaction occurs in many steps then the slowest step is the

• Min step

• Enthalpy determining step

• Mechanism determining step

• Rate determining step

Electrical conductively method is applied for rate determination when

• Reactions and products involve absorption of U.V. or I.R. radiation

• Reaction involving ions

• Reaction which involve change in refractive indices

• Reactions which involve small volume change

In the hydrolysis of CH₃COOC₂H₅ the acid produced is

• Inhibitor

• Catalyst

• Auto catalyst

• None of these

The reaction rate may be measured by

• Physical method

• Chemical method

• Both a and b

• None

The branch of chemistry which deals with the study of rate of reaction is called

• Thermodynamics

• Chemistry of reversibility

• Chemical kinetics

• Mechanistic studies

The change in the conc. of reactants and products in unit time is called

• Reaction rate

• Rate constant

• Diffusion

• None

An increase in conc. is related to number of collisions _________.

• Directly

• Indirectly

• No more

• All

The energy of activation is usually expressed in

• Ergs

• Calories

• Moles

• Joules

When the change in concentration is

6 x 10^-4 mol dm^-3 and time for that change is 10 seconds, the rate of reaction will be

• 6 × 10^-3 mol dm^-3 sec^-1

• 6 × 10^-2 mol dm^-3 sec^-1

• 6 × 10^-4 mol dm^-3 sec^-1

• 6 × 10^-5 mol dm^-3 sec^-1