Question

the formula for the sulfate ion is so₄²⁻. based on this information, which two formulas below represent neutral compounds? choose 2 answers: a mgso₄ b mg₂so₄ c kso₄ d k₂so₄

Explanation:

Step1: Determine ion charges

Magnesium ion ($Mg^{2 + }$), potassium ion ($K^{+}$), sulfate ion ($SO_{4}^{2 - }$).

Step2: Check charge - neutrality for each option

For A ($MgSO_{4}$): $Mg^{2+}+SO_{4}^{2 - }$, total charge is $+ 2+( - 2)=0$.
For B ($Mg_{2}SO_{4}$): $2Mg^{2+}+SO_{4}^{2 - }$, total charge is $2\times(+2)+( - 2)= + 2
eq0$.
For C ($KSO_{4}$): $K^{+}+SO_{4}^{2 - }$, total charge is $+1+( - 2)= - 1
eq0$.
For D ($K_{2}SO_{4}$): $2K^{+}+SO_{4}^{2 - }$, total charge is $2\times(+1)+( - 2)=0$.

Answer:

A. $MgSO_{4}$, D. $K_{2}SO_{4}$