NITROGEN

NITROGEN

Oxides
1. N2O
  1. நடுநிலையானது
  2. NO SPECIAL: colour; smell; taste
  3. Non toxic
  4. Insoluble (water)
  5. Produced in lab by: Heating NH4NO3
    1. NH4NO3 –Δ--►N2O + H2O
2. NO
  1. நடுநிலையானது
  2. Toxic
  3. NO SPECIAL: colour;smell; taste
  4. Insoluble (water)
  5. Produced in lab by:
    1. Cu + 50%.8HNO3 ----►3Cu(NO3)2 + 2NO + 4H2O
3. NO2
  1. Brown coloured
  2. Toxic
  3. நீரில் கரைந்து இருவழிவிகாரம்
    1. 3NO2 + H2O ----► 2HNO3 + NO
  4. கார கரைசலில் இருவழிவிகாரம்
    1. 2NaOH + 2NO2 ----► NaNO3 + NaNO2 + H2O
  5. Reduces Acidic KMnO4-
    1. MnO4- + 5NO2 + H2O ----► Mn2+ + 5NO3 + 2H+
  6. Produced in lab by:
    1. Cu + 4HNO3 ----►Cu(NO3)2 + 2NO+ 2H2O
4. N2O3
  1. Weak acid oxide
  2. Produced in lab by:
    1. NO + NO2 --cooling--► N2O3
5. N2O4
  1. Weak acid oxide
  2. Produced in lab by:
    1. 2NO2 --cooling--► N2O4
6. N2O5
  1. Strong acid oxide
  2. N2O5 + H2O ----► 2HNO3
Oxoacids
1. HNO3
  1. Strong acid
  2. Colourless in it's pure form
  3. நீர் கரைசலில் முற்றாக கூட்டற்பிரிகை
    1. H2O + HNO3 ----►H3O+ + NO3-
  4. ஒளி முன்னிலையில் / வெப்பமாக்கும் போது கூட்டற்பிரிகை
    1. 4HNO3 ----►4NO2 + 2H2O + O2
  5. As oxidiser
    1. Very strong oxidising agent
      1. So HNO3 doesn't act as a நீரகற்ரும் கருவி
    2. Oxidises metals and Non-Metals to their highest oxidation state
    3. Mg + conc.4HNO3 ----►Mg(NO3)2 + 2NO2 + 2H2O
    4. C + 4HNO3 ----►CO2 + 4NO2 + 2H2O
  6. Is never ever a reducing agent
  7. As acid
    1. Strong acid
    2. HNO3 + NaOH ----►NaNO3 + 2H2O
  8. As base
    1. HNO3 + H2SO4 ----►NO2+ + 2H2O + HSO2-
    2. Only with H2SO4
2. HNO2
  1. Weak acid
  2. Not strong when aqueous
    1. Because இருவழிவிகாரமடைகூடியது
      1. 3HNO2 ----►HNO3 + 2NO+ H2O
  3. Strong in low temperature
  4. Produced in lab by:
    1. NaNO2 + HCl ----►NaCl + HNO2

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