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BITSAT 2014
Exam
BITSAT
Year
2014
Subject
Chemistry
Chapter
Ionic Equilibrium

BITSAT 2014 · Chemistry · Ionic Equilibrium

Identify the correct order of solubilty of Na_ 2 S , CuS and ZnS in...

Identify the correct order of solubilty of Na2S\mathrm{Na}_{2} \mathrm{ S}, CuS\mathrm{CuS} and ZnS\mathrm{ZnS} in aqueous medium

Options

  1. ACuS>ZnS>Na2S\mathrm{CuS} > \mathrm{ZnS} > \mathrm{Na}_{2} \mathrm{ S}
  2. BZnS>Na2S>CuS\mathrm{ZnS} > \mathrm{Na}_{2} \mathrm{ S} > \mathrm{CuS}
  3. CNa2S>CuS>ZnS\mathrm{Na}_{2} \mathrm{ S} > \mathrm{CuS} > \mathrm{ZnS}
  4. DNa2S>ZnS>CuS\mathrm{Na}_{2} \mathrm{ S} > \mathrm{ZnS} > \mathrm{CuS}

Correct answer

D. Na2S>ZnS>CuS\mathrm{Na}_{2} \mathrm{ S} > \mathrm{ZnS} > \mathrm{CuS}

Step-by-step solution

The correct order of solublity of sulphides is Na2S>ZnS>CuS\mathrm{Na}_{2} \mathrm{ S} > \mathrm{ZnS} > \mathrm{CuS}
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