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Total enthalpy change for freezing of 1 mol of water at 10^ C to ice at -10^ C is ____ (Given : _ fus H=x ~kJ / mol ) aligned & C _ p [ H ₂ O ( l ) ]= y J mol ⁻¹ ~K ⁻¹ & C _ p [ H ₂ O ( s ) ]= z J mol ⁻¹ ~K ⁻¹ aligned

Options

  1. A-x-10 y-10 z
  2. B-10(100 x+y+z)
  3. C10(100 x+y+z)
  4. Dx-10 y-10 z

Correct answer

B. -10(100 x+y+z)

Step-by-step solution

aligned & H=1 y(0-10)-x 1000+1 z (-10^ -0^ ) & H=-10(100 x+y+z) Joule. aligned

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