a2s2O3[O!\]^_1.9840gNa2s233-5c0,efgh\rijkl Zm100.0mL[O3\rVW2.\]o_1.00mLC?OpGqrs`pGtuvwx`ypGzS{v|AS\rKI[O(2ClO2+10r+8H+=5l2+2Cl+4H20),05min3\rVW3.VW2qrsOpG1mL
[OP`ypVW1ZpNa2s233[\rO(L+2Na2s2O3=2NaI+Na2s436),Na2s2O3[O20.00mL3\rZpNa2s2O3[O`kl ghI3\rC`1.00mLClCh?OPQClChRS________3(JKmg)(A<)3\r ¡¢(1).2NaClO2+C12=2ClO2+2NaCl(2).£A¤¥Cl2¦B§(3).\r¨©kª [«¬Na2s2O3?®9(4).216\r«¯¢(1)BFG°±`mu®9°`.89:;<=>\r2NaC102+C12=2C102+2NaCl²\r(2)?@A<BCDEFGN2HI£A¤ClCh¥CL¦BClCh§²\r³ZpNa2s233[O`{´{vµ¶Q·¸`kl ghI¨©kl [«¬\rNa2s2O3?®9;\r1.9840g\rNa2s2O3[OºRS»¼>!248g=0.0800mol.L-1\r0.1L\r¿C1O2~2.5l2~5Na2s233\rn(C10)=1x0.0800molL-'x20.00xl0-3L=3.200xl0-4mol\r2\r1.00mLCKh?O!m(C102)=3.200xlO-4lx67.5xl03mgmoH=21.6mg3\rmo