A 1.68 mL sample of ethanol (C2H5OH(l), MW = 46.07 g/mol) was combusted in a calorimeter you just calibrated (Cc=10.0 kJ
Posted: Thu Dec 02, 2021 7:24 am
A 1.68 mL sample of ethanol
(C2H5OH(l), MW = 46.07 g/mol) was
combusted in a calorimeter you just calibrated (Cc=10.0
kJ/K). A 10-cm wire was used to ignite the sample, and 2.9 cm
remained after the reaction. The temperature rose from 23.456ºC to
27.406ºC. Determine the enthalpy of the reaction in kJ/mol.
(Density of ethanol: 0.789g/mL) For partial
credit provide intermediate steps such
as Δngas, ΔUºrxn, qrxn, qwire,
and qsys.
C2H5OH(l) + 3
O2(g) ------> 2 CO2(g) + 3
H2O(l)
Report your results in the following format: value reported
= number units (ex. c = 4.184 J/molK)
(C2H5OH(l), MW = 46.07 g/mol) was
combusted in a calorimeter you just calibrated (Cc=10.0
kJ/K). A 10-cm wire was used to ignite the sample, and 2.9 cm
remained after the reaction. The temperature rose from 23.456ºC to
27.406ºC. Determine the enthalpy of the reaction in kJ/mol.
(Density of ethanol: 0.789g/mL) For partial
credit provide intermediate steps such
as Δngas, ΔUºrxn, qrxn, qwire,
and qsys.
C2H5OH(l) + 3
O2(g) ------> 2 CO2(g) + 3
H2O(l)
Report your results in the following format: value reported
= number units (ex. c = 4.184 J/molK)