When a solid dissolves in water, heat may be evolved or absorbed. the heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. in the laboratory a general chemistry student finds that when 5.15 g of nh4br(s) are dissolved in 105.00 g of water, the temperature of the solution drops from 23.82 to 21.63 °c. the heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.76 j/°c. based on the student's observation, calculate the enthalpy of dissolution of nh4br(s) in kj/mol.
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Chemistry, 22.06.2019 14:50
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When a solid dissolves in water, heat may be evolved or absorbed. the heat of dissolution (dissolvin...
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