Nitrogen

Practise balancing equations:

Direction:

In the following equations you will see a blank box before the symbol of each compound and element. Enter the lowest possible number in each box, or leave the box blank if you think the chemical needn't have a number (i.e. the number is equivalent to '1').
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If you want to know the time taken (minutes:seconds) to balance a chemical equation, you click the "Start" button and after balancing the equation, click the "Stop"button. Once, you have noted the time, click the "Reset Timer" button.

Note:

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Preparation of Nitrogen(Laboratory Method):

When a mixture of Ammonium chloride and Sodium nitrite is heated, Nitrogen gas is formed:

NH₄Cl + NaNO₂ → NaCl + N₂ + H₂O

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Preparation of Nitrogen(Other methods):

1.When orange Ammonium dichromate is heated, green Chromium oxide and Nitrogen gas are formed:

(NH₄)₂Cr₂O₇ → Cr₂O₃ N₂ + H₂O

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2.When Ammonia gas is passed over heated black Copper(II) oxide, brown Copper powder, water and Nitrogen gas are formed:

NH₃ + CuO → Cu + H₂O + N₂

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3.When Ammonia gas is passed over heated yellow Lead(II) oxide, grey Lead powder, water and Nitrogen gas are formed:

NH₃ + PbO → Pb + H₂O + N₂

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Reactions of Nitrogen:

1.At 3000^oC or during lightning discharge Nitrogen reacts with Oxygen to form Nirogen monoxide(Nitric oxide):

N₂ + O₂ → NO

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2.When A mixture of Nitrogen gas and Hydrogen gas is passed over Iron catalyst at 200 atm pressure and 450^oC, Ammonia gas is formed:

N₂ + H₂ ⇌ NH₃

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3. Burning Calcium metal reacts with Nitrogen to form Calcium nitride:

Ca + N₂ → Ca₃N₂

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4. Burning Magnesium metal reacts with Nitrogen to form Magnesium nitride:

Mg + N₂ → Mg₃N₂

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5. Red hot Aluminium metal reacts with Nitrogen to form Aluminium nitride:

Al + N₂ → AlN

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6.At 1000^oC Calcium carbide reacts with Nitrogen to form the fertilizer Nitrolim(A mixture of Calcium cyanamide and Carbon):

CaC₂ + N₂ → CaCN₂ + C

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