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To measure the enthalpy change 350 ml of 050 m pbno32aq and

Insoluble PbBr2(s) precipitates when solutions of Pb(NO3)2(aq) and NaBr(aq) are mixed.

Pb(NO3)2(aq) + 2NaBr(aq) ---> PbBr2(s) + 2NaNO3(aq)

ΔrH = ?

To measure the enthalpy change, 350. mL of 0.50 M Pb(NO3)2(aq) and 350. mL of 1.0 M NaBr(aq) are mixed in a coffee-cup calorimeter. The temperature of the mixture rises by 1.6 °C. Calculate the enthalpy change for the precipitation of PbBr2(s) in kJ/mol. (Assume the density of the solution is 1.0 g/mL, and its specific heat capacity is 4.2 J/g · K.)

ΔrH = ________ kJ/mol PbBr2

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Chemistry: To measure the enthalpy change 350 ml of 050 m pbno32aq and

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