QEE 聽(III) precipitates from acidic... [FREE SOLUTION]

Chapter 0: QEE (page 1)

(III) precipitates from acidic solution by addition of ${OH}^{-}$ to form $Fe {(OH)}_{3} (s)$ . At what concentration of localid="1663570454087" ${OH}^{-}$ will $[Fe (III)]$ be reduced to $1.0 x 10^{- 10} M$ ? If $Fe (II)$ is used instead, what concentration of ${OH}^{-}$ will reduce $Fe (II)$ to $1.0 x 10^{- 10} M$ ?

Short Answer

Expert verified

When using [Fe(III)], concentration of ${OH}^{-}$ reduce to $1.0 x 10^{- 10} M$ was found to be $2.5 x 10^{- 10} M$ and using [Fe(II)] concentration of ${OH}^{-}$ reduced to $1.0 x 10^{- 10} M$ was found to be $2.8 x 10^{- 3} M$ .

Step by step solution

concentration

Concentration of ${OH}^{-}$ reduced to $1.0 x 10^{- 10}$ when using $[Fe (III)]$ and using $[Fe (II)]$ must be calculated.

reduction of the concentration of OH- When use [Fe(III)],

When use $[Fe (III)]$ , the concentration of ${OH}^{-}$ reduced to $1.0 x 10^{- 10} M$ is,

role="math" localid="1663571809159" $[{Fe}^{3 +}] {[{OH}^{-}]}^{3} = (10^{- 10}) {[{OH}^{-}]}^{3} = 1.6 x 10^{- 39} [{OH}^{-}] = 2.8 x 10^{- 3} M$

reduction of the concentration of OH- When use [Fe(II)] ,

When use $[Fe (II)]$ , the concentration of localid="1663572130523" ${OH}^{-}$ reduced to $1.0 x 10^{- 10} M$ is,

$[{Fe}^{2 +}] {[{OH}^{-}]}^{2} = (10^{- 10}) {[{OH}^{-}]}^{2} = 7.9 x 10^{- 16} [{OH}^{-}] = 2.8 x 10^{- 3} M$

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Short Answer

Step by step solution

concentration

reduction of the concentration of OH- When use [Fe(III)],

reduction of the concentration of OH- When use [Fe(II)] ,

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91影视

(III) precipitates from acidic solution by addition of OH-to form Fe(OH)3(s). At what concentration of localid="1663570454087" OH-will [Fe(III)]be reduced to 1.0x10-10M? If Fe(II)is used instead, what concentration of OH-will reduce Fe(II) to 1.0x10-10M?

Short Answer

Step by step solution

concentration

reduction of the concentration of OH- When use [Fe(III)],

reduction of the concentration of OH- When use [Fe(II)] ,

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Kinetics

Physical Chemistry

Chemical Reactions

The Earths Atmosphere

Chemistry Branches

Nuclear Chemistry

Study anywhere. Anytime. Across all devices.