# Chemistry

Ethanol, C2H5OH or C2H6O, is mixed with gasoline and sold as gasohol. Given the following thermo-chemical reaction, calculate the kilograms (kg) of CO2 produced when enough ethanol is combusted to provide (or give off) 369 kJ of heat:

C2H5OH (l) + 3 O2 (g) --> 2 CO2 (g) +3 H2O (l);
delta-H rxn = -1235 kJ

1. 👍 0
2. 👎 0
3. 👁 136
1. 1 mole C2H5OH has a mass of 46 grams and will produce 2*44 = 88 g CO2 in producing 1235 kJ of energy. Therefore, how much CO2 is produced when only 369 kJ of heat are produced. That will be
88 x (369 kJ/1235 kJ) = ??

1. 👍 0
2. 👎 0

## Similar Questions

1. ### 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
2. ### Chemistry

Ethanol, C2H5OH is mixed with gasoline and sold as gasohol. Use the following to calculate the grams of ehanol needed to provide 293 kJ of heat. C2H5OH + 3O2 ----> 2CO2 + 3H2O Delta H = -1235 kJ How do I do this question

asked by Lauren on November 1, 2007
3. ### 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
4. ### 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
5. ### Chemistry

Gasohol contains ethanol (C2H4OH)(l), which when burned reacts with oxygen to produce CO2(g) and H2O(g). How much heat is released when 12.5g of ethanol burns? C2H5OH(l) + 3 O2(g) --> 2 CO2(g) + 3H2O(l) Delta H = -1368kJ

asked by Keith on May 19, 2010
6. ### Chemistry

Gasohol contains ethanol (C2H4OH)(l), which when burned reacts with oxygen to produce CO2(g) and H2O(g). How much heat is released when 12.5g of ethanol burns? C2H5OH(l) + 3 O2(g) --> 2 CO2(g) + 3H2O(l) Delta H = -1368kJ How do I

asked by Kieth on May 19, 2010
7. ### chemistry

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;

asked by Anonymous on March 10, 2013
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

Gasohol contains ethanol (C2H4OH)(l), which when burned reacts with oxygen to produce CO2(g) and H2O(g). How much heat is released when 12.5g of ethanol burns? C2H5OH(l) + 3 O2(g) --> 2 CO2(g) + 3H2O(l) Delta H = -1368kJ Chemistry

asked by Kieth on May 19, 2010

More Similar Questions