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Map saplinglearning Using this table of ionization constants, calculate the over

ID: 893372 • Letter: M

Question

Map saplinglearning Using this table of ionization constants, calculate the overall equilibrium constant, Koverall, for the following reaction. HC 00H(aq) ÷ NO2 (aq) HCOOH(aq)-NG, (aq) HC00 (aq) + HNO2(aq) HC00 (aq) + HNOLaq Number overall Previous Give Up & View Solution D Check Answer Next Exit Hint Begin by splitting the reaction into two separate equilibrium reactions. One of the reactions will have this general form. this reaction represents the Ka of the acid HX The other reaction has this general form. this reaction represents the reverse of the Ka of HY K,-

Explanation / Answer

HCOOH(aq) <----------> HCOO-(aq) + H+(aq) ................(1)

K1 = {[HCOO-]*[H+]}/[HCOOH]

Also,

HNO3(aq) ----------> NO3-(aq) + H+(aq) ..............(2)

K2 = {[NO3-]*[H+]}/[HNO3]

Now, (1) - (2) gives

HCOOH(aq) + NO3-(aq) ----------> HCOO-(aq) + HNO3(aq)

Koverall = {[HCOO-]*[HNO3]}/{[HCOOH]*[HNO3]} = K1/K2