How many moles of Fe 2 + ions are formed when excess of iron react with 500 mL O . 4 N HCl , under inert atmosphere? (assume no change in volume)

Step-by-step solution

∵ Reaction between Fe and HCl is as follows Fe + 2 HCl ⟶ FeCl 2 ( + 2 ) + H 2 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 Fe 2 + ion. ∴ Number of Fe 2 + ions produced = 0 . 2 2 = 0 . 1   mole