Inorganic Analysis(Cations & Anions)

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Discussion Overview

The discussion revolves around a set of inorganic analysis questions related to the identification of cations and anions through various chemical reactions. The scope includes practical applications in a laboratory setting, specifically focusing on the behavior of precipitates and gases in response to different reagents.

Discussion Character

  • Homework-related
  • Exploratory

Main Points Raised

  • One participant asks for help identifying anions based on the reactions described in three specific scenarios involving silver nitrate, hydrochloric acid, and a blue solution.
  • Another participant suggests using a table of anions and their corresponding precipitate colors and solubility in concentrated ammonia as a reference for answering the questions.
  • A different participant emphasizes the need for hints rather than direct answers, indicating a preference for guidance in solving the problems independently.
  • One participant humorously remarks on the necessity of memorizing information for the analysis, suggesting a study routine.
  • A later reply questions the relevance of the humorous comment, pointing out the age of the original post and the nature of the response.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on how to approach the questions, with some advocating for reference materials while others seek hints for independent problem-solving. The discussion remains unresolved regarding the specific answers to the questions posed.

Contextual Notes

Participants express varying levels of familiarity with the material, and there is an indication that some may rely on memorization of facts rather than understanding the underlying concepts.

Who May Find This Useful

This discussion may be useful for students preparing for laboratory work in inorganic chemistry, particularly those focusing on qualitative analysis of cations and anions.

surahyot
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Can someone help with these questions:

a)Silver nitrate is added to a solution and a precipitate forms. This precipitate dissolves when concentrated ammonia is added. What anion was present in the original solution?
b)When dilute hydrochloric acid is added to a solution, a gas is evolved. If this gas is passed through a solution containing calcium hydroxide, a white precipitate forms. What anion was present in the original solution?
c)You are provided an aqueous solution which is blue. Addition of dilute hydrochloric acid produces a precipitate. The precipitate dissolves when the solution is heated to boiling. What two cations were in the original solution?

Thanks.
 
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surely you would get a table of anions and colour precipitate, with whether it dissolves completely in conc. ammonia.
 
No, these questions we have to answer b4 going to the lab. So can someone give a hint on how to answer them?
THanks.
 
I hope u got the sheet which u have to mugup ... lol and giv 1/2 hr daily 2 study tht ...hope it helps ! :devil:
 
rockson61 said:
I hope u got the sheet which u have to mugup ... lol and giv 1/2 hr daily 2 study tht ...hope it helps ! :devil:

First post? So you apparently created an account just to write a unintelligible response to a post that's from five years ago?
 

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