An equimolar mixture of ferrous oxalate & stannous chloride is treated with decinormal acidic `KMnO_4` giving ferric, stannic & chlorate ions along with `CO_2` gas. If the titre value is 225 ml. Numbers of millimoles of chlorate ions produced are

Options

A. 1.5 m moles
B. 7.5 m moles
C. 3 m moles
D. 2.64 m moles

Answer

D

Explanation

Let millimoles of `FeC_(2)O_(4)=SnCl_(2)=x`
n-factor of `FeC_(2)O_(4)=3`
n-factor of `SnCI_(2)=14`
`:. 3x + 14 x = 0.1 xx 225`
`implies 17x = 22.5 implies x = (22.5)/17`
m.moles of `ClO_(3)^(-) ` formed `=(22.5)/17xx2=2.64`