aqa as chem 1 question !

Use the Periodic Table to identify the species responsible for the peak at m/z = 64

Can someone please explain to me how you do this question the answer is Zn+

Reply 1

Science_help

Original post by newt1

Use the Periodic Table to identify the species responsible for the peak at m/z = 64

Can someone please explain to me how you do this question the answer is Zn+

m/z is mass over charge, so you look at periodic table to see which element has mass closet to 64, which is zinc. And it must be 1+ as 64/1 = 64

Reply 2

BJA98

Original post by Science_help

m/z is mass over charge, so you look at periodic table to see which element has mass closet to 64, which is zinc. And it must be 1+ as 64/1 = 64

If you use the Aqa insert, copper is closer to 64 at 63.5 compared to 65.5 of zinc, could you please explain the reason for choosing zinc?Thanks

Reply 3

Science_help

Original post by BJA98

If you use the Aqa insert, copper is closer to 64 at 63.5 compared to 65.5 of zinc, could you please explain the reason for choosing zinc?Thanks

could oyu give me the context of the question??

Reply 4

bidisha

Original post by BJA98

If you use the Aqa insert, copper is closer to 64 at 63.5 compared to 65.5 of zinc, could you please explain the reason for choosing zinc?Thanks

in part a of this question you are being asked to calculate the Ar and you get 65.6. so you also use this value and compare it to the periodic table as well and you see that thesefor isotopes are of Zn and 64/1=64 so it is zn+