CHEMISTRY TODAY PLZ HELP FAST!!!!!!!!!!!!!

[niassu]

QUESTION 4(F)(ii)
WHY IS IRON POWDER CURVE BELOW THE ZINC CURVE NOT BELOW THE MAGNESIUM POWDER CURVE
http://www.xtremepapers.net/CIE/Cambrid ... 6_qp_6.pdf
PLZ NEED AN ANSWER V FAST

 

[Saturation]

Thanks for asking that! Even i had the same problem :s

 

[AHMED -_-]

becaz of there different reactivity