help me

somber · Post by **somber** » Sat Jan 12, 2008 4:39 pm

AlCl₃ + CaBr₂ need to balance this double replacement.

Daniel · Post by **Daniel** » Mon Jan 14, 2008 8:47 am

2 AlCl₃ + 3 CaBr₂ = 2 AlBr₃ + 3 CaCl₂
It's simple, just combine the elements and use the Criss Cross method for the charges.
Switch the numerical values of the charge to create a neutral compound.
Al +3
Br -1
So... the Al gets the one from the Br, and the Br gets the 3 from the Al... and then the same thing for every single compound.