Question

Two samples of carbon tetrachloride are decomposed into their constituent elements. One sample produces $32.4 \mathrm{g}$ of carbon and $373 \mathrm{g}$ of chlorine, and the other sample produces $12.3 \mathrm{g}$ of carbon and $112 \mathrm{g}$ of chlorine. Are these results consistent with the law of constant composition? Explain your answer.

Name: Problem 26, Chapter 5: Introductory Chemistry
Uploaded: 2020-08-28T14:27:01-08:00
Duration: 38 s
Channel: David Collins
Description: Two samples of carbon tetrachloride are decomposed into their constituent elements. One sample produces 32.4 g of carbon and 373 g of chlorine, and the other sample produces 12.3 g of carbon and 112 g of chlorine. Are these results consistent with the law of constant composition? Explain your answer.

   Two samples of carbon tetrachloride are decomposed into their constituent elements. One sample produces $32.4 \mathrm{g}$ of carbon and $373 \mathrm{g}$ of chlorine, and the other sample produces $12.3 \mathrm{g}$ of carbon and $112 \mathrm{g}$ of chlorine. Are these results consistent with the law of constant composition? Explain your answer.

Introductory Chemistry

Nivaldo J. Tro 5th Edition

Chapter 5, Problem 26

Instant Answer

Solved by Expert David Collins

08/28/2020

Step 1

For the first sample, the ratio is given by: \[ \frac{32.4 \mathrm{g}}{373 \mathrm{g}} = 0.0868 \] Show more…

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Two samples of carbon tetrachloride are decomposed into their constituent elements. One sample produces $32.4 \mathrm{g}$ of carbon and $373 \mathrm{g}$ of chlorine, and the other sample produces $12.3 \mathrm{g}$ of carbon and $112 \mathrm{g}$ of chlorine. Are these results consistent with the law of constant composition? Explain your answer.

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Key Concepts

Law of Constant Composition

The law of constant composition, sometimes referred to as the law of definite proportions, states that a chemical compound always contains the same elements in the same proportions by mass regardless of its source or method of preparation. This principle means that the ratio of the masses of the elements in a compound remains fixed, which is a fundamental concept in understanding chemical formulas and compound behavior.

Stoichiometric Analysis

Stoichiometric analysis involves using the molar masses of elements to convert measured mass values into moles, allowing for the determination of the ratios of atoms within a compound. By comparing these calculated ratios from different samples, one can verify if the proportions of elements remain consistent, thereby confirming the law of constant composition in the compound.

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