A solution is prepared by mixing (75.0 mathrm{~mL}) of (0.020 mathrm{M}) (mathrm{BaCl}_{2}) and (125 mathrm{~mL}) of (0.040

Question:

A solution is prepared by mixing $75.0 \mathrm{~mL}$ of $0.020 \mathrm{M}$ $\mathrm{BaCl}_{2}$ and $125 \mathrm{~mL}$ of $0.040 \mathrm{M} \mathrm{K}_{2} \mathrm{SO}_{4}$. What are the concentrations of barium and sulfate ions in this solution? Assume only $\mathrm{SO}_{4}{ }^{2-}$ ions (no $\mathrm{HSO}_{4}{ }^{-}$) are present.

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