What is the molar solubility of iron(III) hydroxide (Ksp = 2.5 x 10-39) in water at...

What is the molar solubility of iron(III) hydroxide (Ksp = 2.5 x 10^-39) in water at 25

Expert Solution

Fe(OH)₃ Fe³⁺ + 3OH ^-

Let s be the molar solubility of Fe(OH)₃ in mol/L

1 mole of Fe(OH)₃ produces 1 mole of Fe³⁺ and 3 moles of OH ^-

Then [ Fe³⁺ ] = s

[OH ^- ] = 3s

Solubility product constant , K_SP = [ Fe³⁺ ] [OH ^- ] ³

= s x (3s)³

= 27 s ⁴

s = 9.8x10 ^-11 mol/L

Therefore option (a) is correct

queen_honey_blossom answered 10 months ago

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What is the molar solubility of iron(III) hydroxide (Ksp = 2.5 x 10-39) in water at...

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