Alkaline solution of NaNO2 on heating with Zn powder produces a gas. The gas is? Share with your friends Share 5 Vartika Jain answered this Dear Student, Ammonia gas is produced in the reaction. NaNO2 + 3Zn + 5NaOH +5H2O → 3Na2[Zn(OH)4] + NH3 -31 View Full Answer