1 atempts left Check my work Part (a) Use the balanced chemical equation to cons

Question

1 atempts left Check my work Part (a) Use the balanced chemical equation to construct mole ratios to convert moles of CaHis available to moles of CO; and HO produced. Then use the ideal gas equation, PY-nRT, to calculate the total volume of (CO, HO) gases produced at 350"C and Be sure to answer all parts. (a) What is the total volume of gaseous products, measured at 350°C and 770. torr, when an automobile770. torr engine burns 25.7 g of CsHis (a typical component of gasoline)? 11.4 b) For part (a), the source of 02 ls air, which is about 78.0% N, 21.0% 0, and 1.0% Ar by volume. Part (b) Use the balanced chemical equation to coastruct a mole ratio to convert moles of CaHs available to moles of Oz required. Then use the percent composition data as a ratio to convert moles of Op to moles of other (Ny and Ar) gases. Finally, use the ideal gas equation, PV ART, to calculate the total volume of other gaser produced at 350°C and 770. torr tssuming all the O; reacts, but no N; or Ar does, what is the total volume of gaseous exhausr Ok, got it

Explanation / Answer

a. 2C8H18 + 25 O2 ---------------> 16 CO2 + 18 H2O

moles of C8H18= 25.7/ 114

1mole of C8H18 produces 17 moles of gases.(8CO2+ 9H2O)

PV=nRT

V=nRT/P

= (25.7/114 *17)mol*0.08206L-atm/ K - mol*623 /1.01atm

=193.8L

b) 1mol of C8H18 requires 12.5moles of O2.

O2 is only 21%

12.5 * 0.225 = 2.8125mol O2

41.16moleb of N2+ Ar

V = 193.8 + 41.16 * 0.08206 *623/ 1.01

= 193.8+ 2104.2/1.01

= 2296.11L

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