What is the concentration of hydroxide ions after 50.0 mL of 0.250 M NaOH is added...

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Chemistry

What is the concentration of hydroxide ions after 50.0 mL of0.250 M NaOH is added to 120 mL of 0.200 M Na2SO4?

What is the concentration of hydroxide ions after 50.0 mL of0.250 M NaOH is added to 120 mL of 0.200 M Sr(OH)2?

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a The moles of hydroxide ions added Molarity of OH X volume of OH in litres 0250 X 50 X 103 125 millimoles The volume of solution volume of OH volume of Na2SO4    See Answer
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