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NEETChemistryThermodynamics (C)

Match List - I with List - II. ( array |l|l|c|l| & List - I & & List - II (a) & H ₂ O ( s ) [ latm ] 0 ^ C H ₂ O (l) & (i) & array l G =- ve , S =+ ve array (b) & H ₂ O ( s ) [ latm ] 10^ C H ₂ O ( l ) & (ii) & array l G =+ ve , S =+ ve array (c) & H ₂ O ( s ) [ latm ] -10^ C H ₂ O ( l ) & (iii) & array l G =0, S =+ ve array (d) & array l On addition of HCl in Ag ⁺ solution array & (iv) & array l G =- ve , S =- ve ar

Options

  1. A(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)
  2. B(a) - (ii), (b) - (i), (c) - (iv), (d) - (iii)
  3. C(a) - (iii), (b) - (i), (c) - (ii), (d) - (iv)
  4. D(a) - (i), (b) - (iii), (c) - (ii), (d) - (iv)

Correct answer

C. (a) - (iii), (b) - (i), (c) - (ii), (d) - (iv)

Step-by-step solution

- (a) ( H ₂ O ( s ) H ₂ O ( l ) ) at (0^ C ) : phase change at melting point ( ) equilibrium ( G =0, ~S =+ ve ) (iii) - (b) ( H ₂ O ( s ) H ₂ O ( l ) ) at (10^ C (>0^ C ) ) : melting is spontaneous ( G =- ve , S =+ ve ( i ) ) - (c) ( H ₂ O ( s ) H ₂ O ( l ) ) at (-10^ C ( < 0^ C ) ) : melting is non-spontaneous ( G =+ ve , S =+ ve ) (ii) - (d) Add HCl to ( Ag ⁺ )solution: forms ( AgCl ( s ) ) (precipitation) ( ) spontaneous but ordering increases ( G = ) -ve, ( S=- ve ) (iv) So: (a)-(iii), (b)-(i), (c)-(ii), (d)-(i

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