Write a formula for the compound that forms from barium and the following polyatomic ion.
(a) hydroxide
(b) carbonate
(c) phosphate
(d) hydrogen phosphate
basicaly all i know is that all of these are going to start with Na.
I need major help! thanks:)
If I interpret the question correctly, the question asks for Ba + each of the anions. I don't know where Na fits in. Perhaps there is more to the question than you posted.
Ba(OH)2
BaCO3
Ba3(PO4)2
BaHPO4
I get the first 2 but how did u get the second two?
To write the formulas for the compounds that form from barium and the given polyatomic ions, we need to determine the charges of the ions involved and balance them to create a neutral compound.
(a) Hydroxide is the OH- ion. Barium is a Group 2 element, which forms a 2+ cation (Ba2+). To balance the charges, we need two hydroxide ions for every barium ion. Therefore, the formula for the compound is Ba(OH)2.
(b) Carbonate is the CO3^2- ion. Barium is a 2+ cation (Ba2+). To balance the charges, we need one carbonate ion for every barium ion. Therefore, the formula for the compound is BaCO3.
(c) Phosphate is the PO4^3- ion. Barium is a 2+ cation (Ba2+). To balance the charges, we need three phosphate ions for every two barium ions. Therefore, the formula for the compound is Ba3(PO4)2.
(d) Hydrogen phosphate is the HPO4^2- ion. Barium is a 2+ cation (Ba2+). To balance the charges, we need two hydrogen phosphate ions for every barium ion. Therefore, the formula for the compound is Ba(HPO4)2.
Remember to always check your balanced charges and formulas to ensure they are correct. In this case, make sure you use Ba instead of Na since barium (Ba) is being used.