2 g (an excess) of iron is added to 50 cm of 0.5 M sulfuric acid. When the reaction is over,
the reaction mixture is filtered. The mass of the
unreacted iron is found to be 0.6 g. (A,: Fe = 56.)
a What mass of iron took part in the reaction?
b How many moles of iron atoms took part?
c How many moles of sulfuric acid reacted?
d Write the equation for the reaction, and deduce
the charge on the iron ion that formed.
e What volume of hydrogen (calculated at rtp)
bubbled off during the reaction?