Atitration is performed to calculate the concentration of a solution of a monoprotic acid. the buret is filled with a standardized solution of 158.32 ± 0.05 mm naoh. the initial volume is recorded as 0.14 ml. 25.00 ml of the unknown acid solution are pipetted into an erlenmeyer flask and the solution is titrated to a phenolphthalein endpoint. the final buret reading is 18.76 ml. assuming that the error in each volumetric measurement (buret and pipet) is ±0.03 ml, calculate the concentration of the acid (mm) and use propagation of error to estimate its uncertainty.

Answerthe half-reaction having the greatest tendency to occur at the anode:     i₂(aq) + 2e⁻  ⇄ 2i⁻  ;   e = +0.53 v======oxidation occurs at the anode. we must therefore find the half-reaction with the greatest tendency to oxidize.the given values of e are reduction potentials (the form of the half-reactions are of reduction).the lower the reduction potential, the higher the potential to oxidize. the half-cell with the lowest reduction potential will have the greatest tendency to oxidize at the anode.the half-reaction having the greatest tendency must be    i₂(aq) + 2e⁻  ⇄ 2i⁻    e = +0.53 vbecause its reduction potential is the lowest out of the three.