Chemistry
posted by Johnny .
Ethanol (C2H5OH) has been produced since antiquity by the fermentation of fruits and vegetables. Given the following data, if 5.87 kJ of energy are transferred to 13.3 g of frozen ethanol at 130.0 °C, what is the final temperature of the sample?
Heat capacity (solid) = 0.97 J/°C • g
Heat capacity (liquid) = 2.72 J/°C • g
Heat capacity (gas) = 2.42 J/°C • g
Normal melting point = −114.0 °C
Normal boiling point = 78.4 °C
Heat of fusion = 7.61 kJ/mol
Heat of vaporization = 39.3 kJ/mol

How much heat is required to raise T of solid ethanol from 130 to 114? That will be mass ethanol x specific heat solid ethanol x (TfTi) = ?
How much heat has is left?
5870 J  ? = x
How much heat is required to melt the ethanol. That is mass ethanol x heat fusion = y
xy = z = heat remaining from the original 5870 J.
z = mass liquid ethanol x specific heat liquid ethanol x (Tf  Ti). Substitute and solve for Tf. 
hk
Respond to this Question
Similar Questions

Chemistry
Hydrogren, a possible future fuel, can also be obtained from other compounds such as ethanol. Ethanol can be made from the fermentation of crops, such as corn. How much hydrogen in grams can be obtained from 1.0 kg of ethanol (C2H5OH)? 
science
ethanol, C2H5OH, is responsible for the effts of intoxication felt after drinking alcoholic beverages. When ethanol burns in oxygen, carbon dioxide and water are produced. IF you have 256g of ethanol and 100 grams O2, calculate the … 
Chemistry
Ethanol, C2H5OH or C2H6O, is mixed with gasoline and sold as gasohol. Given the following thermochemical reaction, calculate the kilograms (kg) of CO2 produced when enough ethanol is combusted to provide (or give off) 369 kJ of heat: … 
college chem
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 20.0 g sample of ethanol initially at a temperature of 13.6oC. The specific heat of … 
Chemistry
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 22.8 g sample of ethanol initially at a temperature of 16.5oC. The specific heat of … 
Chemistry
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 13.1 g sample of ethanol initially at a temperature of 11.1oC. The specific heat of … 
Chemistry
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 28.6 g sample of ethanol initially at a temperature of 10.8oC. The specific heat of … 
Chemistry
For ethanol, C2H5OH, which is mixed with gasoline to make the fuel gasohol, H°f = 277.63 kJ/mol. Based upon data in Table 6.2, and that the density of ethanol is 0.787 g•cm3, the number of kilojoules released by burning completely … 
science
Specific heat capacity of solid ethanol is 2.419 J/g C. Melting point temperature of ethanol is 114.4 C/ 158.8 K. Enthalpy of fusion of ethanol is 106.4 J/g. Specific heat capacity of liquid ethanol is 2.440 J/g C. 44.0 g of solid … 
chemistry
The fermentation of glucose to form ethanol occurs according to the following chemical reaction: C6H12O6(aq) → 2 C2H5OH(l) + 2 CO2(g) A) If 700 grams of glucose (C6H12O6) are fermented, what is the maximum volume in milliliters of …