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JEE Main PAPER - 1

JEE Main · 2018

180 questions · One at a time

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167
MCQ4 marks

An aqueous solution contains an unknown concentration of Ba2+Ba^{2+}  . When 50 mL50\text{ mL}   of a 1M1\text{M}   solution of Na2SO4Na_2SO_4   is added, BaSO4BaSO_4   just begins to precipitate. The final volume is 500 mL500\text{ mL}  . The solubility product of BaSO4BaSO_4   is 1×10−101 \times 10^{-10}  . What is the original concentration of Ba2+Ba^{2+}  ?

  • A.1.1×10−9 M1.1 \times 10^{-9}\text{ M}Correct
  • B.1.0×10−10 M1.0 \times 10^{-10}\text{ M}
  • C.5×10−9 M5 \times 10^{-9}\text{ M}
  • D.2×10−9 M2 \times 10^{-9}\text{ M}
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