Q. The Lassaigne's extract is boiled with conc. HNO3 while testing for halogens. By doing so it.?

Question ID: 20238
  1. Increase the concentration of ions
  2. Helps in the precipitation of AgCl
  3. Decomposes Na2S and NaCN, if formed
  4. Increases the solubility product of AgCl

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