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Sagot :
Based on the definition of equivalence point and the data provided;
- the moles of OH- present is 0.0008 moles
- the moles of Ca2+ present is 0.0004 moles.
- The Ksp of calcium hydroxide 5.324 × 10^-8
What is equivalence point of a reaction?
The equivalence point of a reaction is the point at which equal amounts of both acid and base have reacted.
Equation of the reaction is as follows:
HCl + Ca(OH)2 ---> CaCl2 + 2 H20
Moles of HCl reacted = molarity × volume in L
Moles of HCl reacted = 0.05 M × 16/1000 = 0.0008 moles
Therefore, moles of OH- present = 0.0008 moles
Also, moles of Ca2+ present = 0.0008/2 = 0.0004 moles
The molar solubility product Ksp of calcium hydroxide is calculated as follows.
- Ksp = [Ca2+]^2 × 2 × [OH]
volume of solution = 36 mL = 0.036 L
[Ca2+] = 0.0004 / 0.036 = 0.011 M
[OH] = 0.0008 / 0.036 = 0.022 M
Ksp = (0.011)^2 × 2(0.022)
Ksp = 5.324 × 10^-8
Therefore, the moles of OH- present is 0.0008 moles and the moles of Ca2+ present is 0.0004 moles.
The Ksp of calcium hydroxide 5.324 × 10^-8
Learn more about equivalence point at: https://brainly.com/question/24584140
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