Chemistry 1 Marks Question

First order.

The rate of these reactions cannot be same because the rate constant also depends on pre-exponential factor (A), which is different for different reactions.

In the powder state, the surface area of sugar is more than that of crystals, hence it dissolves quickly in water.

Zero.

Those collisions which results in formation of product are called effective collisions.

The rate of the reaction is low because the orientation of the molecules is not correct.

The minimum energy required for a reactant to be converted in to a product is called threshold energy.
Threshold energy = Energy of normal molecule + Activation energy

The reaction will occur at high rate and will be almost complete.

Radioactive disintegration reaction is always of first order.

The slowest term in complex reactions is rate determining term because the rate of reaction is determined through the slow term.

The equation based on concentration of a reaction is called differential rate equation.

In a binary reaction, if any one reactant is taken in excess, the reaction will be of first order because the rate of the reaction will not depend on the concentration of this reactant.

Molecularity of a reaction is always an integer whereas order is not necessarily to be an integer.

Both the order and molecularity of the reaction is 3.

The rate of the reaction will remain unchanged because the rate of a zero order reaction does not depend on concentration.

The rate constant of reaction depends on the nature and temperature of the reactants.