If 20mL 1-0 - 10-5M Ba2- and 30mL 3-0 - 10-6M CO32- mixed- Which of following is correct -Given-Ksp BaCO3-5-1 - 10-9 M2-

After mixing, Total volume= 50 mL using, M_1V_1=M_1V_2 nbsp; (1.0 × 10^ 5M)(20mL)=M_2(50mL) nbsp; [Ba^+2= 4 × 10^ 6M] M_1V_1=M_1V_2 nbsp; (3.0 × 10^ 6M) ...

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Byju's Answer

Standard XII

Chemistry

Basic Buffer Action

If 20mL 1.0 ×...

Question

If 20mL $1.0 \times 10^{- 5} M B a^{2 +}$ and 30mL $3.0 \times 10^{- 6} M C O_{3}^{2 -}$ mixed, Which of following is correct ?
Given:
$K_{s p} (B a C O_{3}) = 5.1 \times 10^{- 9} M^{2}$ .

Precipitate is formed

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No precipitate is formed

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Can't be determined.

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None of the above

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Solution

The correct option is B No precipitate is formed
After mixing,
$Total volume = 50 m L$

using,
$M_{1} V_{1} = M_{1} V_{2}$
$(1.0 \times 10^{- 5} M) (20 m L) = M_{2} (50 m L)$
$[B a^{+ 2} = 4 \times 10^{- 6} M]$

$M_{1} V_{1} = M_{1} V_{2}$
$(3.0 \times 10^{- 6} M) (30 m L) = M_{2} (50 m L)$ $[C O_{3}^{+ 2} = 1.8 \times 10^{- 6} M]$

$Ionic Product = [B a^{+ 2}] [C O_{3}^{- 2}] = [4 \times 10^{- 6}] [1.8 \times 10^{- 6}] = 7.2 \times 10^{- 12}$

Since $Ionic Product < K_{s p}$ ,
$\Rightarrow$ Preicipitate is not formed.

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If 20mL 1.0×10−5M Ba2+ and 30mL 3.0×10−6M CO2−3 mixed, Which of following is correct ? Given: Ksp(BaCO3)=5.1×10−9M2.

If 20mL $1.0 \times 10^{- 5} M B a^{2 +}$ and 30mL $3.0 \times 10^{- 6} M C O_{3}^{2 -}$ mixed, Which of following is correct ?
Given:
$K_{s p} (B a C O_{3}) = 5.1 \times 10^{- 9} M^{2}$ .