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3. A small amount of a solid unknown containing one of the following anions: carbonate, chloride, sulfate, or iodide, was placed in a small, dry, test tube. Upon adding concentrated sulfuric acid, a vigorous reaction takes place yielding a dark colored solution with violet vapors and a gas that has a slight odor of rotten eggs. a. Based on these observations, what anion is probably present in the unknown? b. What reagent could be added to the solid to confirm the presence of this anion and what would be observed for a postive result (be very specific)? c. If the unknown was the potassium salt of the anion, write a balanced equation for the reaction in b. Show phase labels for each reactant and product.

3. A small amount of a solid unknown containing one of the following anions: carbonate, chloride, sulfate, or iodide, was placed in a small, dry, test tube. Upon adding concentrated sulfuric acid, a vigorous reaction takes place yielding a dark colored solution with violet vapors and a gas that has a slight odor of rotten eggs. a. Based on these observations, what anion is probably present in the unknown? b. What reagent could be added to the solid to confirm the presence of this anion and what would be observed for a postive result (be very specific)? c. If the unknown was the potassium salt of the anion, write a balanced equation for the reaction in b. Show phase labels for each reactant and product.

Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
8th Edition
ISBN:9781285199030
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter15: Solutions
Section: Chapter Questions
Problem 135AP
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**Question:** A small amount of a solid unknown containing one of the following anions: carbonate, chloride, sulfate, or iodide, was placed in a small, dry test tube. Upon adding concentrated sulfuric acid, a vigorous reaction takes place yielding a dark-colored solution with violet vapors and a gas that has a slight odor of rotten eggs. a. Based on these observations, what anion is probably present in the unknown? b. What reagent could be added to the solid to confirm the presence of this anion and what would be observed for a positive result (be very specific)? c. If the unknown was the potassium salt of the anion, write a balanced equation for the reaction in b. Show phase labels for each reactant and product.
Transcribed Image Text:**Question:** A small amount of a solid unknown containing one of the following anions: carbonate, chloride, sulfate, or iodide, was placed in a small, dry test tube. Upon adding concentrated sulfuric acid, a vigorous reaction takes place yielding a dark-colored solution with violet vapors and a gas that has a slight odor of rotten eggs. a. Based on these observations, what anion is probably present in the unknown? b. What reagent could be added to the solid to confirm the presence of this anion and what would be observed for a positive result (be very specific)? c. If the unknown was the potassium salt of the anion, write a balanced equation for the reaction in b. Show phase labels for each reactant and product.
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