Two solutions, initially at 24.69°C, are mixed in a coffee cup calorimeter (C cal = 105.5 J/°C). When a 200.0 mL volume of 0.100 M AgNO 3 solution is mixed with a 100.0 mL sample of 0.100 M NaCl solution, the temperature in the calorimeter rises to 25.16°C. Determine the DH° rxn, in units of kJ/mol AgCl. Assume that the density and heat capacity of the solutions is the same as that of water.

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Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m

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