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solution gave a scarlet-red flame test with a few flashes of yellow. The solution gave no reaction carbonate, ammonium phosphate, with ammonium or ammonium sulfate. The halide test produced a faint yello s (a) the

solution gave a scarlet-red flame test with a few flashes of yellow. The solution gave no reaction carbonate, ammonium phosphate, with ammonium or ammonium sulfate. The halide test produced a faint yello s (a) the

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Flame Test and Fireworks Chemistry** **1. Identification of Unknown Elements:** - An unknown solution gave a scarlet-red flame test with a few flashes of yellow. The solution showed no reaction with ammonium carbonate, ammonium phosphate, or ammonium sulfate. The halide test yielded a faint yellow color in the hexane layer. Determine the following: - (a) The alkali or alkaline earth element. - (b) The halide in the unknown solution. --- **2. Brick-Red Flame Test Results:** - An unknown solution exhibited a brick-red flame test. The solution created a white precipitate with ammonium carbonate, ammonium phosphate, and ammonium sulfate upon heating. The halide test revealed a yellow-orange color in the hexane layer. Identify: - (a) The alkali or alkaline earth element. - (b) The halide in the unknown solution. --- **3. Firework Colors and Chemical Composition:** A fireworks display is achieved by mixing various chemicals and gunpowder in a shell and igniting the mixture in the air. Based on experimental observations, which elements are associated with the following firework colors? - (a) Orange-yellow: _______ - (b) Light purple: _______ - (c) Yellow-green: _______ - (d) Bright red: _______ In these tasks, understanding the characteristic colors produced by flame tests and chemical reactions is essential for identifying elements in unknown solutions and designing fireworks.
Transcribed Image Text:**Flame Test and Fireworks Chemistry** **1. Identification of Unknown Elements:** - An unknown solution gave a scarlet-red flame test with a few flashes of yellow. The solution showed no reaction with ammonium carbonate, ammonium phosphate, or ammonium sulfate. The halide test yielded a faint yellow color in the hexane layer. Determine the following: - (a) The alkali or alkaline earth element. - (b) The halide in the unknown solution. --- **2. Brick-Red Flame Test Results:** - An unknown solution exhibited a brick-red flame test. The solution created a white precipitate with ammonium carbonate, ammonium phosphate, and ammonium sulfate upon heating. The halide test revealed a yellow-orange color in the hexane layer. Identify: - (a) The alkali or alkaline earth element. - (b) The halide in the unknown solution. --- **3. Firework Colors and Chemical Composition:** A fireworks display is achieved by mixing various chemicals and gunpowder in a shell and igniting the mixture in the air. Based on experimental observations, which elements are associated with the following firework colors? - (a) Orange-yellow: _______ - (b) Light purple: _______ - (c) Yellow-green: _______ - (d) Bright red: _______ In these tasks, understanding the characteristic colors produced by flame tests and chemical reactions is essential for identifying elements in unknown solutions and designing fireworks.
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