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How is nitrogen prepared in the laboratory? Write the chemical equations of the reactions involved.

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asked Dec 22, 2017 in Chemistry by sforrest072 (157,439 points) ● 61 ● 410 ● 937
How is nitrogen prepared in the laboratory? Write the chemical equations of the reactions involved.

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answered Dec 22, 2017 by mdsamim (213,225 points) ● 5 ● 10 ● 15
selected Dec 22, 2017 by sforrest072
 
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An aqueous solution of ammonium chloride is treated with sodium nitrite

NO and HNO3 are produced in small amounts. These are impurities that can be removed on passing nitrogen gas through aqueous sulphuric acid, containing potassium dichromate.

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