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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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Chemistry

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 °C23.00 °C.

KNO3(s)H2O−−→K+(aq)+NO−3(aq)KNO3(s)→H2OK+(aq)+NO3−(aq)

The temperature of the resulting solution decreases to 17.70°C17.70 °C. Assume that the resulting solution has the samespecific heat as water, 4.184 J/(g⋅°C)4.184 J/(g·°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?

Answer & Explanation Solved by verified expert
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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