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COMEDK2012ChemistryThermodynamics (C)

The enthalpy of neutralisation of HCl and NaOH is x ~kJ . The heat evolved, when 500 ~mL of 2 ~N HCl is mixed with 250 ~mL of 4 ~N NaOH will be

Options

  1. Ax
  2. Bx 2
  3. Cx 4
  4. D2 x 3

Correct answer

A. x

Step-by-step solution

Number of gram equivalent of HCl =N₁ V₁=2 500 1000 =1 No. of gram equivalent of NaOH =N₂ V₂=4 250 1000 =1 Both NaOH and MCI are one gram equivalents. Heat evolved during reaction is equal to enthalpy of neutralisation i.e. x ~kJ .

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