BITSAT 2025 | Chemical Kinetics Question 2 | Chemistry

If for a first-order reaction, the frequency factor $A=4 \times 10^{13} \mathrm{~s}^{-1}$ and activation energy $E_a=98.6 \mathrm{~kJ} \mathrm{~mol}^{-1}$, at what temperature will the half-life be 10 minutes?

$330 k$

$300 k$

$330.95 k$

311.49 k

BITSAT 2024

MCQ (Single Correct Answer)

-1

For the reaction $ 2 \mathrm{SO}_{2}+\mathrm{O}_{2} \rightleftharpoons 2 \mathrm{SO}_{3} $, the rate of disappearance of $ \mathrm{O}_{2} $ is $ 2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}{ }^{-1} $ $ \mathrm{s}^{-1} $. The rate appearance of $ \mathrm{SO}_{3} $ is

$ 2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1} $

$ 4 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1} $

$ 1 \times 10^{-1} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1} $

$ 6 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1} $

BITSAT 2024

MCQ (Single Correct Answer)

-1

If for a first order reaction, the value of $ A $ and $ E_{a} $ are $ 4 \times 10^{13} \mathrm{~s}^{-1} $ and $ 98.6 \mathrm{~kJ} \mathrm{~mol}^{-1} $ respectively, then at what temperature will its half life period be 10 minutes?

330 K

300 K

330.95 K

311.15 K

BITSAT 2020

MCQ (Single Correct Answer)

-1

A volume of 50.00 mL of a weak acid of unknown concentration is titrated with 0.10 M solution of NaOH. The equivalence point is reached after 39.30 mL of NaOH solution has been added. At the half equivalence point (19.65 mL) the pH is 4.85. Thus, initial concentration of the acid and its pK_a values are

$$[HA]$$	$$p{K_a}$$
0.1 M	4.85

$$[HA]$$	$$p{K_a}$$
0.079 M	4.85

$$[HA]$$	$$p{K_a}$$
0.1 M	3.70

$$[HA]$$	$$p{K_a}$$
0.097 M	2.93

PREVIOUS NEXT

BITSAT Subjects

Browse all chapters by subject

English Proficiency

Fill in the Blanks Comprehension Ability Rearrangement Grammar Vocabulary

Logical Reasoning

Verbal

Direction Sense Test Analogy Classification Series Completion Blood Relations Logical Deduction Logic Chart

Non Verbal

Completion of Figure Paper Folding and Cutting Figure Matrix Rule Detection Mirror Image Figure Formation