An acid-catalyzed and a base-catalyzed rearrangement of a β , γ -unsaturated carbonyl compound to a more stable α , β -unsaturated carbonyl compound has to be proposed. Concept introduction: The carbon which is adjacent to the carbonyl group is known as α -carbon , followed next by β -carbon and γ -carbon . The α , β -unsaturated carbonyl compounds are a type of carbonyl compounds where there is a double bond between the α and β -carbon . The β , γ -unsaturated carbonyl compounds are those where there is a double bond between the β and γ carbon. The α , β -unsaturated carbonyl compounds are most stable than the β , γ -unsaturated carbonyl compounds and hence rearrangement takes place in presence of either an acid or a base.

Question

How many milliliters of 97.5(±0.5) wt% H2SO4 with a density of 1.84(±0.01) g/mL will you need to prepare 2.000 L of 0.110 M H2SO4? If the uncertainty in delivering H2SO4 is ±0.01 mL, calculate the absolute uncertainty in the molarity (0.110 M). Assume there is negligible uncertainty in the formula mass of H2SO4 and in the final volume (2.000 L) and assume random error.

Answer 1

Question

Chapter 18, Problem 61P

(a)

Interpretation Introduction

Interpretation: An acid-catalyzed and a base-catalyzed rearrangement of a β,γ-unsaturated carbonyl compound to a more stable α,β-unsaturated carbonyl compound has to be proposed.

Concept introduction: The carbon which is adjacent to the carbonyl group is known as α-carbon, followed next by β-carbon and γ-carbon. The α,β-unsaturated carbonyl compounds are a type of carbonyl compounds where there is a double bond between the α and β-carbon. The β,γ-unsaturated carbonyl compounds are those where there is a double bond between the β and γ carbon. The α,β-unsaturated carbonyl compounds are most stable than the β,γ-unsaturated carbonyl compounds and hence rearrangement takes place in presence of either an acid or a base.

(b)

Interpretation Introduction

Interpretation: An acid-catalyzed and a base-catalyzed rearrangement of a β,γ-unsaturated carbonyl compound to a more stable α,β-unsaturated carbonyl compound has to be proposed.

Concept introduction: The carbon which is adjacent to the carbonyl group is known as α-carbon, followed next by β-carbon and γ-carbon. The α,β-unsaturated carbonyl compounds are a type of carbonyl compounds where there is a double bond between the α and β-carbon. The β,γ-unsaturated carbonyl compounds are those where there is a double bond between the β and γ carbon. The α,β-unsaturated carbonyl compounds are most stable than the β,γ-unsaturated carbonyl compounds and hence rearrangement takes place in presence of either an acid or a base.

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How many milliliters of 97.5(±0.5) wt% H2SO4 with a density of 1.84(±0.01) g/mL will you need to prepare 2.000 L of 0.110 M H2SO4? If the uncertainty in delivering H2SO4 is ±0.01 mL, calculate the absolute uncertainty in the molarity (0.110 M). Assume there is negligible uncertainty in the formula mass of H2SO4 and in the final volume (2.000 L) and assume random error.

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