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AP EAMCET201823 Apr 2018Evening ShiftChemistrys Block ElementsActual

Calcium phosphide reacts with water to form Ca ( OH )₂ and X . When X is passed into CuSO ₄ solution. Y and H ₂ SO ₄ are formed. What is Y ?

Options

  1. A[ Cu ( PH ₃ )₄ ]^ 2 *
  2. B[ Cu ( PH ₃ )₆ ]²⁺
  3. CCu ₃ P ₂
  4. DCuHPO ₄

Correct answer

C. Cu ₃ P ₂

Step-by-step solution

Calcium phosphide reacts with water to form calcium hydroxide and phosphine. aligned & Ca ₃ P ₂+6 H ₂ O 3 Ca ( OH )₂ a q+2 PH ₃(g) & Calcium Water Calcium hydroxide Phosphine & Phosphide & aligned Phosphine when passed into CuSO ₄ solution, it reacts to produce black precipitate of cupric phosphide and H ₂ SO ₄ . aligned & 3 PH ₃+3 CuSO ₄ Cu ₃ P ₂ & Phosphine Copper sulphate Cupric phosphide & +3 H ₂ SO ₄ & Sulphuric acid & aligned

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