Ethanol, C2H5OH, is being promoted as a clean fuel and is used as an additive in many gasoline
mixtures. Calculate the ΔH°rxn for the combustion of ethanol. ΔH°f [C2H5OH(l)] = -277.7 kJ/mol;

ΔH°f [CO2(g)] = -393.5 kJ/mol; ΔH°f [H2O(g)] = -241.8 kJ/mol

  1. 👍 0
  2. 👎 0
  3. 👁 233
  1. C2H5OH + 3O2 ==> 2CO2 + 3H2O
    dHfrxn = (n*dHf products) - (n*dHf reactants)
    Solve for dHf rxn.

    1. 👍 0
    2. 👎 0
  2. klhj

    1. 👍 0
    2. 👎 0
    posted by klhjk
  3. gg

    1. 👍 0
    2. 👎 0
    posted by ali

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    an airport mixes and additive into its jet fuel. The ration of fuel to additive needs to be kept the same. Complete the table below for amount of additive required for different amounts of fuel fuel (kg) 63 84 98 add 9(g) 30 42 48

    asked by Max on February 26, 2015
  2. 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•cm-3, the number of kilojoules released by burning

    asked by A on October 16, 2011
  3. 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

    asked by Kate on April 1, 2008
  4. Chemistry

    Ethanol is a fuel that can be made from corn. How many kJ of heat energy are released when 3.00 kg of ethanol are burned? C2H5OH(l) + 3O2(g) ¨ 2CO2(g) + 3H2O(g) H = -1406.8 kJ/mol

    asked by Marcus on April 17, 2010
  5. Chemistry

    Gasohol is a fuel containing ethanol (C2H5OH) that burns in oxygen (O2) to give CO2 and water. How many moles of O2 are needed to completely react with 2.50 moles of ethanol?

    asked by Deborah on October 25, 2011
  6. Chemistry

    Ethanol, C2H5OH, is mixed with gasoline and sold as gasohol. Use the following to calculate the grams of ethanol needed to provide 367 kJ of heat. C2H5OH(l) + 3 O2(g) ¨ 2 CO2(g) + 3 H2O(g) ƒ¢H = −1235 kJ

    asked by Samantha on November 21, 2011
  7. 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

    asked by liz on February 6, 2011
  8. chemistry

    Ethanol (C2H5OH) and gasoline (assumed to be all octane, C8H18) are both used as automobile fuel. If gasoline is selling for $1.45/gal, what would the price of ethanol have to be in order to provide the same amount of heat per

    asked by Dani on October 30, 2016
  9. chemistry

    ethanol(C2H5OH)and gasoline(assumed to be octane,C8H18) are both used as automobile fuel.if gasoline is selling for $2.20/gal,what would the price of ethanol have to be in order to provide the same amount of heat per dollar?The

    asked by asembi on November 2, 2011
  10. chemistry

    The complete combustion of ethanol, C2H5OH (FW = 46.0 g/mol), proceeds as follows: C2H5OH(l) + 3 O2(g) → 2 CO2(g) + 3 H2O(l) ΔH = −555 kJ What is the enthalpy change for combustion of 15.0 g of ethanol

    asked by sharon on October 22, 2015

More Similar Questions