please answer correctly- it\'s been wrong twice now! Titration to Determine the
ID: 561259 • Letter: P
Question
please answer correctly- it's been wrong twice now!
Titration to Determine the Ksp A saturated solution of an unknown metal (IV) hydroxide was filtered to remove any excess solids. Then a 12.00 mL sample of the saturated solution was titrated to the end point with a 0.16 M solution of HCI HCI used as the titrant Titration of filtered saturated slution Piltered saturated solution If it took 12.60 mL of HCl to titrate to the endpoint, a) What is the molar concentration of hydroxide ion in the saturated solution? b) What is the molar concentration of the unknown metal (IV) cation in the saturated solution? c) What is the Ksp for this unknown metal (IV) hydroxide:Explanation / Answer
a)
mmol of H+ = MV = 0.16 * 12.60 = 2.016 mmol of H+
mmol of OH- = 2.016
[OH-] = mmol/V = 2.016 / 12 = 0.168 M
b)
given
M(OH)4
[M+4] = 1/4*[OH-] = 1/4*0.168 = 0.042 M
c)
Ksp = [M+4][OH-]^4
Ksp = (0.042)(0.168 ^4) = 3.3457*10^-5
Ksp = 3.3457*10^-5
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