AP-ECET SERIES Chemistry
Chemical Kinetics
4 previous year questions.
Volume: 4 Ques
Yield: Medium
High-Yield Trend
2
2019 1
2018 1
2003 Chapter Questions 4 MCQs
01
PYQ 2003
easy
chemistry ID: ap-ecet-
The rate constant of a reaction at temperature 200 K is 10 times less than the rate constant at 400 K. What is the activation energy of the reaction? (R = Gas constant)
1
1842.4 R
2
921.2 R
3
460.6 R
4
230.3 R
02
PYQ 2018
medium
chemistry ID: ap-ecet-
Thermal decomposition of is a first order reaction and the rate constant at T(K) is . The time required to decompose of initial quantity of at in seconds is
1
100
2
500
3
1000
4
50
03
PYQ 2019
easy
chemistry ID: ap-ecet-
The half-life periods of a first order reaction at and are and respectively. The activation energy of the reaction in is (log 5 = 0.70)
1
4
2
8
3
16.1
4
20.1
04
PYQ 2019
medium
chemistry ID: ap-ecet-
The rate constants for a reaction at and are and
respectively. The activation energy of the reaction in is
1
38.3
2
57.4
3
114.9
4
76.6