试样0.6334g,溶解于过金的KI溶液后,用HCI溶液滴定,耗去0.1178mol-ILHC1溶液42.59mL,计算试样中HgO的质费分数°【解】根据反应2HgO+4K】+2HQ=—HgJz-|-l:4-4K0H可知,”心:nKoi.=1«2,所以0.1178X42.59X216.59or<7O0/2X0.6334X1000一''5.78%<2笠>某甲醛溶液1°・00mL于锥...