Anonymous
Anonymous asked in Science & MathematicsChemistry · 2 months ago

What is the pH of a solution prepared by dissolving 1.6 g of Ca(OH)2 in water to make 770. mL of solution?

What is the pH of a solution prepared by dissolving 1.6 g of Ca(OH)2 in water to make 770. mL of solution?

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  • 2 months ago
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    1.6 g Ca(OH)2 x 1 mol/74 g = 0.0216 moles

    0.0216 moles / 0.770 L = 0.0281 M Ca(OH)2 = 0.0562 M OH- 

    pOH = -log 0.0562 M = 1.25 

    pH = 14 - pOH

    pH = 12.75

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