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JEE Main PAPER - 1

JEE Main · 2018

180 questions · One at a time

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170
MCQ4 marks

An aqueous solution contains 0.10M H2S0.10\text{M } H_2S   and 0.20M HCl0.20\text{M HCl}  . If the equilibrium constants for the formation of HS−HS^-   from H2SH_2S   is 1.0×10−71.0 \times 10^{-7}   and that of S2−S^{2-}   from HS−HS^-   ions is 1.2×10−131.2 \times 10^{-13}   then the concentration of S2−S^{2-}   ions in aqueous solution is:

  • A.6×10−216 \times 10^{-21}
  • B.5×10−195 \times 10^{-19}
  • C.5×10−85 \times 10^{-8}
  • D.3×10−203 \times 10^{-20}Correct
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