Solid sodium sulfide is slowly added to 150 mL of a 0.454 M manganese(II) nitrate solution until the concentration of sulfide ion is 0.0268 M. The mass of manganese(II) ion remaining in solution is  grams.

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.