Q2TY Find [Pb2+],PbI2(aq),聽and [PbI3... [FREE SOLUTION]

Chapter 6: Q2TY (page 128)

Find $[{Pb}^{2 +}], {PbI}_{2} (aq),$ and $[{PbI}_{3}^{-}]$ in a saturated solution of ${PbI}_{2} (s)$ with $[I^{-}] = 0.10 M .$

Short Answer

Expert verified

$Theconcentrationof [{Pb}^{2 +}] is 7.9 脳 10^{- 7} M Theconcentrationof [{PbI}_{2 (aq)}] is 1.1 脳 10^{- 5} M Theconcentrationof [{PbI}_{3}] is 6.6 脳 10^{- 6} M$

Step by step solution

Define the solubility product

It is defined as the product of the dissolved ion concentration raised to the power of the stoichiometric coefficient.

$M_{y} X_{z (s)} \overset{K_{sp}}{鈬�} M^{z +} (aq) + {zX}^{y -} (aq) K_{sp} = [M^{z +}]^{y} [X^{y -}]^{z}$

The solubility product is very helpful in predicting whether a salt precipitates in a solution.

Find the concentration.

For the reaction:

${PbI}_{2} (s) 鈬� {Pb}^{+ 2} + 2 I^{-} K_{sp} = 7.9 脳 10^{- 9}$

$K_{s p} = [P b^{+ 2}] [I^{-}]^{2}$

$[{Pb}^{2 +}] = K_{sp} / {[I^{-}]}^{2} = (7.9 脳 10^{- 9}) / {(0.10)}^{2} = 7.9 脳 10^{- 7} M$

Find the concentration.

$P b^{2 +} + 2 I^{-} \overset{尾_{2}}{鈬�} P b I_{2} 尾_{2} = 1.4 脳 10^{3} [P b I_{2 (a q)}] = 尾_{2} [P b^{2 +}] [I^{-}]^{2}$

$= 1.1 脳 10^{- 5} M$

Find the concentration.

$P b^{2 +} + 3 I^{-} \overset{尾_{3}}{鈬�} P b {I_{3}}^{-} 尾_{3} = 8.3 脳 10^{3}$

Concentration of $P b l_{3}^{-}$

$[{Pbl}_{3}^{-}] = 尾_{3} [{Pb}^{2 +}] {[l^{-}]}^{3} = 6.6 脳 10^{- 6} M$

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Find $[{Pb}^{2 +}], {PbI}_{2} (aq),$ and $[{PbI}_{3}^{-}]$ in a saturated solution of ${PbI}_{2} (s)$ with $[I^{-}] = 0.10 M .$

Short Answer

Step by step solution

Define the solubility product

Find the concentration.

Find the concentration.

Find the concentration.

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91影视

Find [Pb2+],PbI2(aq),and [PbI3-]in a saturated solution of PbI2(s)with [I-]=0.10M.

Short Answer

Step by step solution

Define the solubility product

Find the concentration.

Find the concentration.

Find the concentration.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Ionic and Molecular Compounds

Kinetics

Physical Chemistry

The Earths Atmosphere

Chemical Analysis

Chemistry Branches

Study anywhere. Anytime. Across all devices.

Find $[{Pb}^{2 +}], {PbI}_{2} (aq),$ and $[{PbI}_{3}^{-}]$ in a saturated solution of ${PbI}_{2} (s)$ with $[I^{-}] = 0.10 M .$