• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Chemistry: Post your doubts here!

princessnoor

princessnoor

Messages
239
Reaction score
341
Points
73
ZaqZainab said:
3rd statesmen means it is less likely to donate electrons in the see of electrons if it has higher ionisation energy
so that mean Group 2 elements are not likely to donate so it is against it having a higer melting point the more the delocalised sea of elctrons the stonger the lattice hence higher the melting point
Q11 check out the data booklet for the equation of MnO4-
it is MnO4-+8H++5e-= MnO2+ +4H2O
and we have
Sn2+=Sn4+ +2e-
make the electrons equal
to do this
(Sn2+=Sn4+ +2e-)*5 and (MnO4-+8H++5e-= MnO2+ +4H2O)*2
now the mole ratio
Sn2+:MnO4-
5:2
Moles of Sn2+=9.5/190=0.05
and so moles of MnO4- =0.02
Click to expand...
higher ionisation mean high melting point ryt? and in data booklet the values are higher
 
You must log in or register to reply here.
Top