Pure N_2 gas is obtained from which of the fo | vedclass

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(B) Pure $N_2$ gas is prepared by the thermal decomposition of sodium azide or barium azide. However,in the laboratory,it is prepared by heating an aq

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$NH_4Cl + NaNO_2$

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(B) Pure $N_2$ gas is prepared by the thermal decomposition of sodium azide or barium azide. However,in the laboratory,it is prepared by heating an aqueous solution of ammonium chloride and sodium nitrite: $NH_4Cl(aq) + NaNO_2(aq) 	o N_2(g) + 2H_2O(l) + NaCl(aq)$ This reaction produces pure $N_2$ gas.

Pure $N_2$ gas is obtained from which of the following?

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