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MHT CET20243 May 2024Evening ShiftChemistryThermodynamics (C)Actual

Find value of Q from following equations. (i) C _ ( s ) + O _ 2( ~g ) CO _ 2( ~g ) H = QkJ (ii) C _ ( s ) + 1 2 O _ 2( ~g ) CO _ 2( ~g ) H =- xkJ (iii) C _ ( s ) + 1 2 O _ 2( ~g ) CO _ 2( ~g ) H =- ykJ

Options

  1. A-(x+y) k J
  2. B(x-y) k J
  3. C- x + y 2 ~kJ
  4. Dx + y 2 ~kJ

Correct answer

A. -(x+y) k J

Step-by-step solution

(ii) C _ ( s ) + 1 2 O _ 2( ~g ) CO _ ( g ) H =- x (iii) CO _ ( g ) + 1 2 O _ 2( ~g ) CO _ 2( ~g ) H =- y Adding equations (ii) and (iii), we get the required equation; (i) C _ ( s ) + O _ 2( ~g ) CO _ 2( ~g ) H = Q =-( x + y ) kJ [Note: The equation (ii) and (iii) from the question is modified to apply appropriate textual concepts.]

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