Whether the given compositions disprove Proust’s law of constant composition or not. The compound carbon monoxide contains 42.9%, carbon and 57.1% oxygen. The compound carbon dioxide contains 27.3% carbon and 72.7% oxygen. Concept Introduction: The law of constant composition or the law of definite composition sometimes called Proust's law which explains that a chemical compound does not depend on its source and method of preparation but always comprises its component elements in fixed ratio (by mass).

Question

NMR spectrum of ethyl acetate has signals whose chemical shifts are indicated below. Which hydrogen or set of hydrogens corresponds to the signal at 4.1 ppm? Select the single best answer. The H O HỌC—C—0—CH, CH, 2 A ethyl acetate H NMR: 1.3 ppm, 2.0 ppm, 4.1 ppm Check OA B OC ch B C Save For Later Submit Ass © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center |

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Chapter 2, Problem 2.19P

Interpretation Introduction

Interpretation:

Whether the given compositions disprove Proust’s law of constant composition or not.

The compound carbon monoxide contains 42.9%, carbon and 57.1% oxygen. The compound carbon dioxide contains 27.3% carbon and 72.7% oxygen.

Concept Introduction:

The law of constant composition or the law of definite composition sometimes called Proust's law which explains that a chemical compound does not depend on its source and method of preparation but always comprises its component elements in fixed ratio (by mass).

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NMR spectrum of ethyl acetate has signals whose chemical shifts are indicated below. Which hydrogen or set of hydrogens corresponds to the signal at 4.1 ppm? Select the single best answer. The H O HỌC—C—0—CH, CH, 2 A ethyl acetate H NMR: 1.3 ppm, 2.0 ppm, 4.1 ppm Check OA B OC ch B C Save For Later Submit Ass © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center |

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