The rate expression for the formation of double helix in DNA is to be derived from the following mechanism: ( S 1 + S 2 ) ⇌ ( S 1 : S 2 ) * f a s t s t e p ( S 1 : S 2 ) * → ( S 1 : S 2 ) s l o w s t e p Where S 1 and S 2 represent strand 1 and 2 and (S 1 :S 2 ) * is the unstable helix. Concept introduction: An intermediate is species that is formed during the reaction but is not the product of that reaction. It means it is produced during the reaction and consumed during the reaction. Steady state approximation is a method to derive the rate law. According to this, the intermediate is consumed as soon as it is produced.

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Chapter 20, Problem 71E

Interpretation Introduction

Interpretation:

The rate expression for the formation of double helix in DNA is to be derived from the following mechanism:

( S 1 + S 2 ) ⇌ ( S 1 : S 2 ) * fast step

( S 1 : S 2 ) * →( S 1 : S 2 ) slow step

Where S₁ and S₂ represent strand 1 and 2 and (S₁:S₂)^* is the unstable helix.

Concept introduction:

An intermediate is species that is formed during the reaction but is not the product of that reaction. It means it is produced during the reaction and consumed during the reaction.

Steady state approximation is a method to derive the rate law. According to this, the intermediate is consumed as soon as it is produced.

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