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Questions and Answers
What defines a cation in ionic compounds?
What defines a cation in ionic compounds?
- An ion that has gained electrons.
- An ion with a positive charge. (correct)
- An atom with no charge.
- A negatively charged ion.
What is the likely reason for difficulty in identifying ions in complex mixtures?
What is the likely reason for difficulty in identifying ions in complex mixtures?
- One species may interfere with the analytical test for another. (correct)
- The presence of anions complicates the tests significantly.
- Ions may not react with any reagents.
- All ions behave identically in reactions.
In identifying ions, what does the presence of a precipitate indicate?
In identifying ions, what does the presence of a precipitate indicate?
- The ions are soluble in the tested solution.
- A chemical reaction has occurred resulting in an insoluble product. (correct)
- There are no ions present in the solution.
- The ions both dissolve completely in the solvent.
Which of the following ions form as a result of electron removal from an atom?
Which of the following ions form as a result of electron removal from an atom?
When referring to elements that typically form ionic compounds, which statement is true?
When referring to elements that typically form ionic compounds, which statement is true?
What does the superscript on an ion indicate?
What does the superscript on an ion indicate?
Which of the following statements is true regarding soluble and insoluble compounds?
Which of the following statements is true regarding soluble and insoluble compounds?
What is an anion?
What is an anion?
What is formed when silver thiosulfate is heated?
What is formed when silver thiosulfate is heated?
What is the result of adding urea to a sample containing nitrite ions after acidification?
What is the result of adding urea to a sample containing nitrite ions after acidification?
What type of precipitate is formed when chloride ions react with silver nitrate?
What type of precipitate is formed when chloride ions react with silver nitrate?
Which compound is insoluble in strong acids and bases?
Which compound is insoluble in strong acids and bases?
Which ion is reduced to nitrogen gas when reacting with urea and nitric acid?
Which ion is reduced to nitrogen gas when reacting with urea and nitric acid?
What is the color of the precipitate formed when bromide ions react with silver nitrate?
What is the color of the precipitate formed when bromide ions react with silver nitrate?
What happens to silver bromide precipitate in concentrated ammonia solution?
What happens to silver bromide precipitate in concentrated ammonia solution?
What type of ions are involved in the formation of silver thiosulfate complexes?
What type of ions are involved in the formation of silver thiosulfate complexes?
What is the characteristic reaction product formed when phosphate ions react with ammonium molybdate?
What is the characteristic reaction product formed when phosphate ions react with ammonium molybdate?
Which ion is confirmed by the formation of a white precipitate when barium chloride is added?
Which ion is confirmed by the formation of a white precipitate when barium chloride is added?
What role does heating serve in the procedure for testing phosphate ions?
What role does heating serve in the procedure for testing phosphate ions?
What happens when excess thiosulfate is added to the white silver thiosulfate precipitate?
What happens when excess thiosulfate is added to the white silver thiosulfate precipitate?
Which of the following reagents is added to test for sulfate ions?
Which of the following reagents is added to test for sulfate ions?
In which part of the procedure is nitric acid used?
In which part of the procedure is nitric acid used?
How is thiosulfate ion (S2O32–) primarily identified in the laboratory procedure?
How is thiosulfate ion (S2O32–) primarily identified in the laboratory procedure?
What is the significance of the test tube being clean and dry before adding the solutions?
What is the significance of the test tube being clean and dry before adding the solutions?
What is the product formed when iron(III) ions react with hydrogen phosphate?
What is the product formed when iron(III) ions react with hydrogen phosphate?
Which compound is added to prevent the release of hydrogen ions during iron(III) phosphate precipitation?
Which compound is added to prevent the release of hydrogen ions during iron(III) phosphate precipitation?
What type of precipitate is formed when aluminum ions react with sodium hydroxide?
What type of precipitate is formed when aluminum ions react with sodium hydroxide?
What is the amphoteric behavior of aluminum hydroxide?
What is the amphoteric behavior of aluminum hydroxide?
What is observed when excess ammonia is added to a chromium(III) hydroxide precipitate?
What is observed when excess ammonia is added to a chromium(III) hydroxide precipitate?
What is the appearance of chromium(III) hydroxide precipitate?
What is the appearance of chromium(III) hydroxide precipitate?
What happens when chromium(III) hydroxide is boiled in the presence of complexing agents?
What happens when chromium(III) hydroxide is boiled in the presence of complexing agents?
What species is produced from the reaction of aluminum hydroxide with excess hydroxide ions?
What species is produced from the reaction of aluminum hydroxide with excess hydroxide ions?
What is the product formed when the sulfate ion reacts with barium chloride?
What is the product formed when the sulfate ion reacts with barium chloride?
Which ion reacts with silver nitrate to produce a precipitate of silver chloride?
Which ion reacts with silver nitrate to produce a precipitate of silver chloride?
What is the significance of the ammonium phosphomolybdate complex formed in the reaction involving the phosphate ion?
What is the significance of the ammonium phosphomolybdate complex formed in the reaction involving the phosphate ion?
In the reaction involving the thiosulfate ion and silver nitrate, what is the main product formed?
In the reaction involving the thiosulfate ion and silver nitrate, what is the main product formed?
What role does the iron(III) ion play in the reactions involving phosphate ions?
What role does the iron(III) ion play in the reactions involving phosphate ions?
What is the final outcome of the reaction between the nitrite ion and urea?
What is the final outcome of the reaction between the nitrite ion and urea?
Which of the following is not a results of the reaction between the aluminum ion and hydroxide ion?
Which of the following is not a results of the reaction between the aluminum ion and hydroxide ion?
What is a characteristic product of the bromide ion when reacted with silver nitrate?
What is a characteristic product of the bromide ion when reacted with silver nitrate?
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