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Chapter 15: Q40 E (page 873)

A volume of 0.800 L of a 2脳10-4-MBa(NO3)2 solution is added to 5脳10-4 MLi2 SO4. Does BaSO4 precipitate? Explain your answer.

Short Answer

Expert verified

Ki is smaller than Ksp for BaSO4, no precipitation of BaSO4 will occur

Step by step solution

01

Define Precipitate

Precipitation occurs when ionic product is greater than a solubility product of a substance.

02

Calculating the concentration of barium ions

Substituting the formula in c2

\({c_2}=\frac{{{c_1}{V_1}}}{{{V_2}}}=\frac{{2 \times 1{0^{-4}}\times 0.8L}}{{1L}}=1.6\times1{0^{-4}}\)

\(\left( {B{a^{2+}}}\right)=1.6\times1{0^{-4}}\)

\({c_2}=\frac{{{c_1}{V_1}}}{{{V_2}}}=\frac{{5\times1{0^{-4}}\times0.2L}}{{1L}}=1\times1{0^{-4}}\)

\(\left({SO_4^{2-}}\right)=1\times1{0^{-4}}\)

03

Determining ionic product

\({K_i}=\left({B{a^{2+}}}\right)\left({SO_4^{2-}}\right)\)

\({K_i}=1.6\times1{0^{-8}}\)

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