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This is an oxidation-reduction (redox) reaction:

NaI + e- → Na0 (reduction)

NIII - 1 e- → NIV (oxidation)

NaNO2 is an oxidizing agent, NaNO2 is a reducing agent.

Word equation

sodium nitrite → sodium + nitrogen dioxide

Input interpretation

NaNO2 → Na + NO2

Sodium nitrite nitrogen nitrogen dioxide

Balanced equation

Balance the chemical equation algebraically:

NaNO2 → Na + NO2

Add stoichiometric coefficients, c;, to the reactants and products:

c1 NaNO2 → c2Na + c3NO2

Set the number of atoms in the reactants equal to the number of atoms in the products for N, Na and O:

N: c1=c3

Na: c1=c2

O: 2c1 = 2c3

Since the coefficients are relative quantities and underdetermined, choose a coefficient to set arbitrarily. To keep the coefficients small, the arbitrary value is ordinarily one. For instance, set c1 = 1 and solve the system of equations for the remaining coefficients:

c1 = 1 c2=1 

c3 = 1

Substitute the coefficients into the chemical reaction to obtain the balanced

equation:

Answer:

NaNO2 → Na + NO2



Word equation

sodium nitrite → sodium + nitrogen dioxide



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