BITSAT 2017 Slot 2 Solved Paper

∵ Reaction between Fe and HCl is as follows
Fe+2HCl────▸

FeCl2

(+2)

+H2 on reaction
n (moles of Fe)=n (moles of HCl )
n(Fe)= Normality (HCl)×Volume of HCl
n(Fe)=

0.4×500

1000

=0.2 moles
As each Fe consumers 2 electrons to change to Fe2+ ion.
∴ Number of Fe2+ ions produced =

0.2

2

=0.1mole