Write the formulas of the compounds formed by specified cations with the following anions: OH-, ClO3-, SO3^2-, HPO4^2-.

Express your answers as chemical formulas separated by commas. Use the given order of anions.
1)NH4+
2)Al^3+
3)Pb^4+

Question

Write the formulas of the compounds formed by specified cations with the following anions: OH-, ClO3-, SO3^2-, HPO4^2-. 


Express your answers as chemical formulas separated by commas. Use the given order of anions.
1)NH4+
2)Al^3+
3)Pb^4+

thomaster · Answer

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First one would be $\sf  NH_4OH $ 
what do you think $\sf  NH_4^++~ClO_3^-=\ ?$

thomaster · Answer

You have to look at the charge of the anions and cations

For example Pb is 4+  and OH is 1-
The overal charge needs to be 0 so you would need 4x (OH) to make the overal charge 0.
So the formula is $\sf Pb(OH)_4$