4
Question Question 4
Complete the table given below :
| Heat on | Gas evolved | Colour of gas | Odour of gas | Nature of gas | Solubility of gas in water | Colour of residue if any |
|---|---|---|---|---|---|---|
| 1. KNO3 | ||||||
| 2. (NH4)2Cr2O7 | ||||||
| 3. ZnCO3 | ||||||
| 4. Zn + dil. H2SO4 | ||||||
| 5. Na2S + dil. H2SO4 | ||||||
| 6. Na2SO3 + dil. H2SO4 | ||||||
| 7. NaCl + conc. H2SO4 | ||||||
| 8. NaNO3 + Cu + conc. H2SO4 | ||||||
| 9. MnO2 + conc. HCl | ||||||
| 10. NH4Cl + NaOH |
| Heat on | Gas evolved | Colour of gas | Odour of gas | Nature of gas | Solubility of gas in water | Colour of residue if any |
|---|---|---|---|---|---|---|
| 1. KNO3 | O2 | Colourless | Odourless | Neutral | Soluble | White |
| 2. (NH4)2Cr2O7 | N2 | Colourless | Odourless | Neutral | Soluble | Greenish |
| 3. ZnCO3 | CO2 | Colourless | Odourless | Acidic | Soluble | Yellow - hot White - cold |
| 4. Zn + dil. H2SO4 | H2 | Colourless | Odourless | Neutral | soluble | - |
| 5. Na2S + dil. H2SO4 | H2S | Colourless | Rotten egg smell | Acidic | Soluble | - |
| 6. Na2SO3 + dil. H2SO4 | SO2 | Colourless | Suffocating | Acidic | Soluble | - |
| 7. NaCl + conc. H2SO4 | HCl | Colourless | Pungent | Acidic | Soluble | - |
| 8. NaNO3 + Cu + conc. H2SO4 | NO2 | Reddish brown | Irritating | Acidic | soluble | - |
| 9. MnO2 + conc. HCl | Cl2 | Greenish yellow | Pungent | Acidic | Soluble | - |
| 10. NH4Cl + NaOH | NH3 | Colourless | Pungent | Basic | Soluble | - |