1.
In a titration experiment, 1010 mL of an FeCl2\text{FeCl}_2 solution consumed 2525 mL of a standard K2Cr2O7\text{K}_2\text{Cr}_2\text{O}_7 solution to reach the equivalent point. The standard K2Cr2O7\text{K}_2\text{Cr}_2\text{O}_7 solution is prepared by dissolving 1.2251.225 g of K2Cr2O7\text{K}_2\text{Cr}_2\text{O}_7 in 250250 mL water. The concentration of the FeCl2\text{FeCl}_2 solution is closest to

[Given molecular weight of K2Cr2O7=294\text{K}_2\text{Cr}_2\text{O}_7 = 294 g mol1^{-1}]