2006-11-11 13:20:36 · 9 answers · asked by E Z DUZ IT 1 in Science & Mathematics ➔ Chemistry
K2Cr2O7
Postassium ion: K+
Dichromate ion: Cr2O72(2-)
so to there has to be 2 potassium ions for each dichromate ions. You can also see http://en.wikipedia.org/wiki/Potassium_dichromate
if you want more info.
2006-11-11 13:36:04 · answer #1 · answered by First L 2 · 0⤊ 0⤋
The formula is K2Cr2O7, with the numbers being the subscripts. The reason is that dichromate has a 2- charge and potassium has a 1+ charge so when you drop and swap the charges, you end up with 2 potassiums and one Cr2O7.
2006-11-11 14:35:04 · answer #2 · answered by laugh2much4 1 · 0⤊ 0⤋
Potassium ion = K+
Dichromate ion = Cr2O7 2-
therefore
potassium dichromate = K2Cr2O7
2006-11-12 00:14:36 · answer #3 · answered by amandac 3 · 0⤊ 0⤋
Potassium dichromate is K2Cr2O7. The dichromate alone has a 2- charge.
2006-11-11 13:36:50 · answer #4 · answered by pearlygaze 3 · 0⤊ 0⤋
Dichromate is Cr2O7 and has a charge of -2
K (potassium) has charge of +1
Therefore, potassium dichromate is:
K2Cr2O7
2006-11-11 13:35:42 · answer #5 · answered by bagpiper75 1 · 1⤊ 0⤋
it's K2Cr2O7 with 227 subscribs
2006-11-11 13:37:18 · answer #6 · answered by girliefri 2 · 0⤊ 0⤋
K2CrO7
Ithink the dichr has a (2-) charge?
2006-11-11 13:25:32 · answer #7 · answered by Silly me 4 · 0⤊ 0⤋
KCr2O7 or something like that. (2 and 7 in subscript)
2006-11-11 13:32:48 · answer #8 · answered by Rachel 2 · 0⤊ 0⤋
K2Cr2O7
2006-11-12 00:06:55 · answer #9 · answered by Anonymous · 0⤊ 0⤋