what is the equivalent mass of IO4- when it is converted to I2 in acid medium - Chemistry - d and f Block Elements

Question

what is the equivalent mass of IO4- when it is converted to I2 in
acid medium

Vartika Jain · Accepted Answer

Dear Student,

IO4- → I2Step 1: First balance the I atom2IO4- → I2Step 2: Now balance the O atom by adding H2O2IO4- → I2 + 8H2OStep 3: Balance the H atom by adding H+2IO4- + 16H+ → I2 + 8H2OStep 4: Balance the charge by adding electrons2IO4- + 16H+ + 14e-→ I2 + 8H2OTherefore, the required reaction is2IO4- + 16H+ + 14e-→ I2 + 8H2OFor 2 mol of IO4-, 14 electrons are transferredSo, for 1 mol of IO4-, 142=7 electrons will be transferredNow, equivalent mass=Molar mass of IO4-Number of electrons transferred per mole =1907=21
14 g-eq