Question

write the chemical formula of the sulphate of the following cation-
k+,ba2+,al3+​

Answer 1

Answer:All the three chemical formulas are K2SO4, BaSO4, Al2(SO4)3.

Explanation:

Answer 2

The formula of the sulfates is $K_2SO_4, BaSO_4, Al_2(SO_4)_3$.

• Sulfate exist as $SO_4^{2-}$ ion. Potassium exists as $K^+$. Thus according to the criss-cross method, the sulfate of potassium can be given as $K_2SO_4$.
• Sulfate exist as $SO_4^{2-}$ ion. Ba exists as $Ba^{+2}$. Thus according to the criss-cross method, the sulfate of Ba can be given as $BaSO_4$.
• Sulfate exist as $SO_4^{2-}$ ion. Aluminium exists as $Al^{+3}$. Thus according to the criss-cross method, the sulfate of Al can be given as $Al_2(SO_4)_3$.