Rates of Reaction

IMPORTANT

Rates of Reaction: Overview

This topic covers concepts, such as, Catalyst, Factors Influencing Rate of a Chemical Reaction, Effect of Temperature on Rate of a Reaction & Effect of Surface Area on Rate of a Reaction etc.

Important Questions on Rates of Reaction

MEDIUM
IMPORTANT

The minimum energy required to start a chemical reaction is known as:

HARD
IMPORTANT

  A+2B 3C+2D.

The ratio of disappearance of B is   1× 10 2 mol/L/S.  The rate of reaction and  rate of change in concentration of A and C would be:

EASY
IMPORTANT

The factors which influence the rate of reaction are :

Concentration: Greater the concentrations of the reactants, faster is the rate of reaction.

Temperature: The rate of reaction increases with increase in temperature. For most of the reactions, the rate of reaction becomes almost double with 10o rise in temperature.

Presence of catalyst: A catalyst generally increases the speed of a reaction.

Answer the following question :

A small increase in temperature of the reacting system, the rate of reaction exceed to large extend. The most appropriate reason for this is-

MEDIUM
IMPORTANT

Explain enzyme as a drug target.

MEDIUM
IMPORTANT

How to define substrate.

EASY
IMPORTANT

The term -dcdt in a rate equation refers to:

EASY
IMPORTANT

For a given reaction A  B, rate of disappearance of R = R t.

MEDIUM
IMPORTANT

Thermal decomposition of N2O5 occurs as per the equation below :

2N2O54NO2+O2

The correct statement is

EASY
IMPORTANT

For the reaction, 2SO2+O22SO3, the rate of disappearance of O2 is 2×10-4 mol L-1 s-1 . The rate of appearance of SO3 is

EASY
IMPORTANT

For a reaction: N2+3H22NH3, the rate of reaction with respect to NH3will be:

MEDIUM
IMPORTANT

For the reaction, N2+3H22NH3, if dNH3dt=2×10-4 mol/L/s, the value of -dH2dt would be

EASY
IMPORTANT

Higher the activation energy of a reaction, faster is the reaction.

MEDIUM
IMPORTANT

The rate of a multistep reaction is determined by the fastest step in the sequence.

EASY
IMPORTANT

Nitrogen tetraoxide  N2O4 decomposes as
                   N2O4g2 NO2g

If the pressure of N2O4 falls from 0.50 atm to 0.32 atm in 30 minutes, the rate of appearance of NO2g is:

HARD
IMPORTANT

Activation energy of a chemical reaction can be determined by ______.

EASY
IMPORTANT

A small increase in temperature of the reacting system, the rate of reaction exceed to large extend. The most appropriate reason for this is-

MEDIUM
IMPORTANT

The rate of a chemical reaction can be expressed in terms of

MEDIUM
IMPORTANT

Consider the reaction 2NO(g)+O2(g)2NO2(g). If dNO2dt=0.052M/s then -dO2dt will be 

EASY
IMPORTANT

The instantaneous rate of reaction 2A+BC+3D is given by:

EASY
IMPORTANT

In the reaction A+3B2C, the rate of formation of C is