Question

what is the formula for calcium sulfite? what is the formula for barium nitrite?

Explanation:

Step1: Determine barium and nitrite ions

Barium ion is $Ba^{2 + }$, nitrite ion is $NO_{2}^{-}$. To form a neutral - compound, we need 2 nitrite ions for 1 barium ion.

Step2: Write the formula for barium nitrite

The formula is $Ba(NO_{2})_{2}$.

Step3: Determine calcium and sulfite ions

Calcium ion is $Ca^{2+}$, sulfite ion is $SO_{3}^{2 - }$. Since the charges are equal in magnitude, the ratio of calcium to sulfite is 1:1.

Step4: Write the formula for calcium sulfite

The formula is $CaSO_{3}$.

Answer:

Barium nitrite: $Ba(NO_{2})_{2}$
Calcium sulfite: $CaSO_{3}$