How much energy will be released to the surroundings when 0.100 g of ethanol are combusted?...

Question

Question

How much energy will be released to the surroundings when 0.100 g of ethanol are combusted? CH3CH2OH (l) + 302 (g) → 2C02 (g) +3H2O (g)

deltaHrxn = -1235 k.J

science chemistry

Answer 1

Answer #1

CH3CH2OH(l) + 3 O2(g) <==== >2 CO2(g) + 3 H2O(g) ΔH = -1235 k.J

One mole of ethanol combusted and produces -1235 k.J of heat

Mass of ethanol = 0.1 g

Molar mass of ethanol = 46.07 g/mol

Moles of ethanol = 0.1 g / 46.07 g/mol = 0.0021706 Moles

Amount of heat released to the surroundings = 0.0021706 Mole x 1235 kJ /mole = 2.68 kJ

Hence 2.68 kJ of heat will be released to the surroundings when 0.100 g of ethanol are combusted

Answer 2

Similar Homework Help Questions

Part A How much energy (in klojoules) is released when 22.0 g of capacity is 113...

Part A How much energy (in klojoules) is released when 22.0 g of capacity is 113 J/(K mol) for the liquid and 65.7 J/(K-mol) for the vapor ethanol vapor at 98.5 C is cooled to-12.0 C Ehanol has mp k.J Submit de Feedback Next
How much heat is released if 35.0 g of ethanol (C2H5OH) burns in excess oxygen? C2H5OH()...

How much heat is released if 35.0 g of ethanol (C2H5OH) burns in excess oxygen? C2H5OH() + 302(g) - 2CO2(0) + 3H2O() ДНrxn = –1367 kJ/mol Multiple Choice О 4.78 x 104 kJ Отэт к 1797 kJ О 9.61 ж 10-4 kJ О 1040 kJ О 1367 kJ
How much energy (in kilojoules) is released when 31.5 g of ethanol vapor at 97.0 ∘C...

How much energy (in kilojoules) is released when 31.5 g of ethanol vapor at 97.0 ∘C is cooled to -13.5 ∘C? Ethanol has mp = -114.5 ∘C, bp = 78.4 ∘C, ΔHvap = 38.56 kJ/mol and ΔHfusion = 4.60 kJ/mol. The molar heat capacity is 113 J/(K⋅mol) for the liquid and 65.7 J/(K⋅mol) for the vapor.

How much heat is released when 6.00 g of methane is combusted using the reaction below?...

How much heat is released when 6.00 g of methane is combusted using the reaction below? CH4 + 2O2 → CO2 + 2H2O ΔHrxn = -890. kJ I came up with 334 kJ but not sure if it is correct.
gu3eous Caide ahd liquid gascods Calon dioxide ahd liquid water. (5 pts.) How much heat is release per mole of ethanol combusted when the reaction is carried out at A) standard conditions? (5 pts.) i...

gu3eous Caide ahd liquid gascods Calon dioxide ahd liquid water. (5 pts.) How much heat is release per mole of ethanol combusted when the reaction is carried out at A) standard conditions? (5 pts.) in nntronu of the surroundings ner mole of ethanol combusted when the gu3eous Caide ahd liquid gascods Calon dioxide ahd liquid water. (5 pts.) How much heat is release per mole of ethanol combusted when the reaction is carried out at A) standard conditions? (5 pts.)...
The energy released when one gram of any substance is combusted is the fuel value of...

The energy released when one gram of any substance is combusted is the fuel value of the substance. Bread has an approximate fuel value of 12 kJ/g. How much energy, in kilojoules, would be provided by a standard loaf of bread with a mass of 567 g? Enter your answer to the ones place.

The energy released when one gram of any substance is combusted is the fuel value of...

The energy released when one gram of any substance is combusted is the fuel value of the substance. Bread has an approximate fuel value of 12 kJ/g. How much energy, in kilojoules would be provided by a standard loaf of bread with a mass of 567? enter your answer to the ones place.
How much heat is released when 6.00 g of methane is combusted using the reaction below?...

How much heat is released when 6.00 g of methane is combusted using the reaction below? CH4 + 2O2 → CO2 + 2H2O ΔHrxn = -890. kJ I got 334kJ, but it is multiple choice and my answer can be positive or negative...I am just not sure which one.
How much heat energy is required to convert 15.0 g of solid ethanol at -114.5 °C...

How much heat energy is required to convert 15.0 g of solid ethanol at -114.5 °C to gasesous ethanol at 143.1 °C? The molar heat of fusion of ethanol is 4.60 kJ/mol and its molar heat of vaporization is 38.56 kJ/mol. Ethanol has a normal melting point of -114.5 °C and a normal boiling point of 78.4 °C. The specific heat capacity of liquid ethanol is 2.45 J/g·°C and that of gaseous ethanol is 1.43 J/g·°C. How much heat energy...

Ethanol, C2H5OH, burns in oxygen gas by the following reaction. C2H5OH(l) + 3O2(g) → 2CO2(g) +...

Ethanol, C2H5OH, burns in oxygen gas by the following reaction. C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(g); ΔH = -1235 kJ How many grams of ethanol would be needed to provide 293 kJ of heat?