Consider two reactions with different activation energies at the same temperature. The reaction with the lower activation energy will have:
Order of Reaction
Q.4
The order of a chemical reaction, that is dependent of concentration is:
Catalysis
Q.5
On a Boltzmann distribution curve, | 10. How does the presence of a catalyst the area under the curve represents:
Q.6
On a Boltzmann distribution the activation energy (Ea) is represented by:
Q.7
If we double the concentration of a reactant, the rate increases by four times, the reaction is:
Reaction Mechanism
Q.8
The rate determining step in a multi- step reaction is:
Q.9
NO2(g)+CO(g) NO(g)+CO2(g) occurs in two steps. What is the rate law equation for this reaction? 2NO2 → NO + NO3 (k1) slow NO3 + CO → C02 + NO2 (k2) fast
Q.11
On an energy profile diagram, the presence of a catalyst is represented by:
Q.12
The units of the rate constant (k) for a reaction depend on the:
Q.13
A first-order reaction has a half-life (t1/2) of 20 minutes. What is the value of its rate constant (k)?
Collision Theory
Q.14 Effective collisions are those that:
Q.15 Collision frequency depends on:
Q.16
Which one reduces activation energy?
Q.17 Rate of reaction is measured as:
Q.18 Units of rate for gaseous reaction are:
Q.19
Which of the following methods measures reaction rate?
Q.20
In rate = A[C//At, C refers to:
Q.21 Rate is fastest:
Q.22 A flat curve in rate vs time graph indicates:
Q.23
Which factor affects rate of reaction?
Q.24 Increase in surface area:
Q.25 Effect of temperature on rate is:
Q.26
In a chemical reaction, a catalyst:
Q.28 Higher pressure increases rate for:
Q.29 Rate law is an expression involving:
Q.30
Rate = k[A]" defines:
Q.32 A reaction is first-order if:
Q.33 A zero-order reaction has rate:
Q.34 Units of rate constant depend on:
Q.35
Unit of rate constant for zero-order reaction is:
Q.36
Unit of rate constant for first-order reaction is:
Q.37 Unit of k for second-order reaction is:
Q.38
For nth order reaction, unit of k is:
Q.39
k has units for:
Q.40
Which unit is common for all orders?
Q.41 Rate constant can be determined by:
Q.42
For gaseous reactions, rate is often monitored by:
Q.43
In color change reactions, which method is best?
Q.44 Reaction rate by conductometry depends on:
Q.45 Rate constant is independent of:
Q.46 First-order reactions are best studied using:
Q.47 Half-life is time in which:
Q.48 Half-life of first-order reaction:
Q.49 Half-life of zero-order reaction is:
Q.50 Half-life reaction is:
Q.51
Which order has constant half-life?
Q.52 Unit of half-life is:
Q.53 The slowest step in a mechanism is:
Q.54 A reaction mechanism describes:
Q.55 Intermediates are:
Q.56 Rate-determining step controls:
Q.57 Mechanism supports:
Q.58 Catalysts usually act in:
Q.59 In energy profile diagram a catalysts:
Q.60 Enzyme is a:
Q.61
In an energy profile, peak represents:
Q.62 Energy profile shows:
Q.63 Homogeneous catalysts are in:
Q.64
In presence of catalyst, AH:
Q.65 A reaction is spontaneous when:
Q.66 Gibbs free energy equation is:
Q.67
At equilibrium, AG is:
Q.68
Negative AH and positive AS implies:
Q.69 AG tells about:
Q.70
If AG = 0, the system is:
Collision Theory Simulator
Simulate rate of reaction as a function of temperature and catalyst presence.