Get premium membership and access revision papers with marking schemes, video lessons and live classes.

Processing. Please wait.

Nitrogen may be isolated from air or from the reaction between ammonium chloride and sodium nitrite.
a).(i) State the condition necessary for the production of nitrogen from ammonium chloride and sodium nitrite.
(ii) Write an equation for the reaction above.
(b) Name a major impurity contained in nitrogen isolated from air.

Answer Text:
a).i).Heating
ii).#NaNO_(2(aq)) + NH_4Cl_(aq) → N_(2(g)) + NaCl_(aq) + 2H_2O_(l)#
b).Argon