Explain why the formula of aluminium sulphate is Al2(SO4)3 not AlSO4?. numbers are meant to be in subscript
because Al is Al(3+) and SO4 is SO4(2-) so you got to equal the electrical charge 2x3+ is 6+ and 3X2- is 6- from there Al2(SO4)3
Here you go..... ptcl.chem.ox.ac.uk/~hmc/hsci/chem...
Si es tu profesora la que te corrigio el error, sabe, quedate tranquila. El aluminio tiene número de oxidación +3 y el radical sulfato -2, intercambiando número de oxidación por atomicidad, para equilibrar, te queda lo que dijo tu profesora...
valence This is a measure of how many electrons can be used to form chemical bonds. Aluminum ions have a valence of three and the sulfate ion has a valence of two. Aluminum sulfate is an ionic compound (a salt) and forms aluminum ions with a positive charge of three and sulfate ions with a negative charge of two. The only way to balance the charge is to associate two aluminum ions with three sulfate ions: Al2(so4)3 - 2Al(+3) + 3SO4(-2)
