Question

We use AgNO₃ (aq) gravimetric titration to determine a seawater sample containing Cl^- and I^-. If the titration graph

only shows a single plateau, then we can only determine the total salinity of this sample, not the Cl^- and I^-content separately. ________

(2) Using gravimetry to quantify silver content based on insoluble AgX (X=Cl, Br, or I), we prefer AgI chemically. ___ (3) The analyte is usually placed in the Erlenmeyer flask, which is called a direct titration. By swapping reagent in the

buret with analyte in the Erlenmeyer flask, we call the new setup as a back titration _______________

(4) A weak base is the base that is not fully dissociated in aqueous media ________________.

(5). The reaction of H₂SO₄ (aq) + NaAc (aq) can not complete, or simply say, no reaction / no change. ____________

1. Mark the statements as True or False. (1) We use AgNO3(aq) gravimetric titration to determine a seawater sample containing Ci' and I. If the titration graph only shows a single plateau, then we can only determine the total salinity of this sample, not the Ct and I'content separately. (2) Using gravimetry to quantify silver content based on insoluble AgX (X=C1, Br, or I), we prefer Agł chemically._ (3) The analyte is usually placed in the Erlenmeyer flask, which is called a direct titration. By swapping reagent in the buret with analyte in the Erlenmeyer flask, we call the new setup as a back titration (4) A weak base is the base that is not fully dissociated in aqueous media (5). The reaction of H2SO4 (aq) + Naas (aq) can not complete, or simply say, no reaction / no change.