Potassium nitrate, KNO3KNO3, has a molar mass of 101.1101.1 g/mol. In a constant-pressure calorimeter, 44.644.6 g...

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Potassium nitrate, KNO3KNO3, has a molar mass of 101.1101.1g/mol. In a constant-pressure calorimeter, 44.644.6 g of KNO3KNO3is dissolved in 201201 g of water at 23.00 Â°C23.00 Â°C.
KNO3(s)H2Oâˆ’âˆ’â†’K+(aq)+NOâˆ’3(aq)KNO3(s)â†’H2OK+(aq)+NO3âˆ’(aq)
The temperature of the resulting solution decreases to 17.70Â°C17.70 Â°C. Assume that the resulting solution has the samespecific heat as water, 4.184 J/(gâ‹…Â°C)4.184 J/(gÂ·Â°C), and thatthere is negligible heat loss to the surroundings.
How much heat was released by the solution?
What is the enthalpy of the reaction?

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3.6 Ratings (601 Votes)

Given Mass of potassium nitrate 446 g Mass of water 201 g Mass of solutionm Mass of potassium nitrate Mass of water 446 g 201 g 2456 g Asthe solution has the same specific heat as water The See Answer

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