thatonedude thatonedude

12-03-2018
Chemistry

contestada

I need help with this redox reaction. Thanks in advance

NO₂⁻(aq) + Al(s) → NH₃(g) + AlO₂⁻(aq)

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kx85DirtbikeRider kx85DirtbikeRider

12-03-2018

NO2- +7H+ + 6e->> NH3 + 2H2O ( N goes from +3 to -3)

Al + 2 H2O >> AlO2- + 4H+ + 3e-

NO2- + 2Al + 2H2O >> NH3 + 2AlO2- + H+

add OH- on the left and on the right

NO2- + 2 Al + H2O + OH- >> NH3 + 2 AlO2-

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