Salt Analysis Tricks for practical exams

Komali Mam2 minutes read

Salt analysis is essential for students to identify cations and anions in just minutes using specific tests. Using dilute H2SO4 and barium chloride for anions, and ammonium hydroxide and potassium ferrocyanide for cations, along with other tests, students can efficiently analyze salts.

Insights

  • Salt analysis in practicals allows students to rapidly identify cations and anions in salts using specific reagents and tests within a short timeframe of 10 to 15 minutes.
  • Various tests involving reagents like dilute H2SO4, barium chloride, ammonium hydroxide, potassium ferrocyanide, and potassium chromate are utilized to discern the presence of specific cations and anions, ensuring accurate identification in salt analysis, particularly advantageous for PUC and CBSE students.

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Recent questions

  • What is the purpose of salt analysis in practicals?

    Identification of cations and anions in salts.

  • How can one identify anions in salt analysis?

    Use dilute and concentrated H2SO4, and barium chloride.

  • What are the steps to identify cations in salt analysis?

    Test with ammonium hydroxide, potassium ferrocyanide, and other reagents.

  • How can students ensure efficient testing in salt analysis?

    Use minimal amounts of salt and water, and keep a prepared original solution.

  • What does a vinegar-like smell indicate in salt analysis?

    Presence of CO3-2 anion.

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Summary

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Efficient Salt Analysis for Cations and Anions

  • Salt analysis is a crucial part of practicals for students, and this method allows identification of cations and anions in just 10 to 15 minutes.
  • Every salt consists of cations (basic radicals) and anions (acidic radicals) formed from bases and acids respectively.
  • To identify anions, use dilute and concentrated H2SO4, and barium chloride, with specific tests for sulfite, sulfate, nitrate, chloride, bromide, and iodide ions.
  • For cations, start with the original solution, test with ammonium hydroxide for Cu+2 and Fe+2, and potassium ferrocyanide for Fe+3.
  • Additional tests involve dimethyl glyoxal for Ni+2, blue litmus and NH4OH for Al+3, and potassium chromate for lead or barium, followed by specific tests for strontium, calcium, and ammonium ions.
  • Use minimal amounts of salt and water, and keep a prepared original solution for efficient testing.
  • A vinegar-like smell indicates the presence of CO3-2 anion.
  • Follow these steps to quickly and accurately identify cations and anions in salt analysis, beneficial for PUC and CBSE students.
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