Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsFirst Order ReactionsMedium2 minQB

ChemistryMediumnumerical

Passage / Comprehension

Completing first order reactions.

Frequently a species can react in different wags to give a variety of products. For e.g. toluene can be nitrated at ortho, meta, para positions. We shall consider the simplest case, the competing irreversible 1^st order reactions.

$K_{1} / K_{2} = 1/2$ .

Initially, only 2 moles of A are present. The total number of moles of A, B, and C at the end of a 75% reaction is...

Answer:

3.50

Solution:

$[A]_{t} [B + C]_{t}$

$2 - x 2 x$

$x = \frac{75}{100} \times 1.5$

$[A]_{t} + [B]_{t} + [C] = 2 x + x = 3.50$

Stream:JEESubject:ChemistryTopic:Chemical KineticsSubtopic:First Order Reactions

⏱ 2mℹ️ Source: QB

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