A coffee cup calorimeter contained 50.0 mL of a 1.33 M KOH solution at an initial temperature of 22.8 ºC.  A student quickly add 50.0 mL of 1.17 M HNO3 to the calorimeter.  The maximum temperature reached during the neutralization reaction was 28.6ºC. Determine the ΔHrxn for this neutralization reaction in kJ/mol of HNO3.

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A coffee cup calorimeter contained 50.0 mL of a 1.33 M KOH solution at an initial temperature of 22.8 ºC.  A student quickly add 50.0 mL of 1.17 M HNO3 to the calorimeter.  The maximum temperature reached during the neutralization reaction was 28.6ºC.
Determine the ΔHrxn for this neutralization reaction in kJ/mol of HNO3.
·       assume specific heat of solution is the same as specific heat of water = 4.18 J/gºC
·       assume density of both KOH and HNO3 are the same as water = 1.00 g/mL
if negative value, be sure to type in a minus sign 

 

answer:  -41.4 ( can you please show me the work to get this answer)

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