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Chemical Kinetics Temperature Dependence of the Rate of a Reaction
These Chemical Kinetics Questions and Answers PDF are prepared by our Livelearns team for NEET and JEE Mains. These Chemical Kinetics NEET Questions are based on the chapter on Chemistry Chemical Kinetics Preparation of these questions has been taken from various books including NCERT, Previous years question papers, and model papers. So these Chemical Kinetics JEE Questions cover all the class 12 subject chemistry topics of Chemical Kinetics, These MCQs are very helpful in your preparation for the National Eligibility cum Entrance Test-UG (NEET) and JEE mains. We have provided these questions in PDF format which you can Download by clicking the link as provide below. These Chemical Kinetics JEE Mains Questions PDF are absolutely FREE for you from Livelearns Team.
CHEMICAL KINETICS Questions and Answers PDF
Chemical Kinetics All Topics Are Cover Click One By One To Read Everythings
- The reaction A + 2B 2C obeys the rate equation: Rate = KAB What is the order of the reaction?
Ans. Order =+3/2 =2
- What is photochemical reaction ?
Ans. The reaction whose rate is influenced by light radiation is called as photochemical reaction.
e.g. photosynthesis, decomposition of H,O,.
- For a zero order of reaction the concentration.
Ans. Varies directly with
- How does rate of zero order reaction vary with progress of time ?
Ans. Rate of a zero order reaction remaians unchanged with progress of time. t, C
- For ‘n’ th order reaction,
Ans. ca-n/2
- For a zero order reaction, the molecularity is zero. Yes or no
Ans. No, moleculararity of a reaction can never be Zero.
E2
- In the equation K – Ae RT, what is A
Ans. A is a constant called as collision number or frequency factor and its unit is sec
- How does the value of K’ vary with activation energy ?
Ans. As the value of activation energy increases the rate constant (K) value decreases. (As given in Arrhenius equation)
- Can all molecular collisions yield the product ?
Ans. No, only the effective collisions yield the
product.
- What is the condition when all collisions between the molecules can be effective collision ?
Ans. When activation energy of the reactant is zero,
then K= A. Where K rate constant A = collision number.
Under such conditions all collisions can be effective
collision to form the product, But this concept 1s
theoritical.
- What is the unit of zero order reaction
Ans. Mol lit sec .
- Write two factors which influence rate constant of a reaction ?
Ans. Temperature and catalyst.
- The ratio between the rate constants at two different temperature differing by 10°C is called
Ans. Temperature co-efficient
- For a 1st order reaction when rate of reaction is platted conc. of reactant a straight line is obtained whose slope is 2.5. What is its rate constant.
Ans. Rate constant = slope = 2.5 Sec
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