Ethanol (C₂H₅OH) is blended with gasoline as an automobile fuel. (d) Calculate the mass of CO₂ produced per kJ of heat emitted.

Video transcript

Hey everyone. So here we are protesting hydroxide and it's produced from the reaction of potassium oxide in water. And we asked how much protesting hydroxide and grams is produced per kill jewel of heat released. I need to first round the entropy of the reaction. All that the interview the reaction is equal to the sum times the number of malls time to entropy information. Other products minuses. Some was the number of moles time to interfere the formation of the reactant. The entropy of formation of potassium oxide. It's Mega 363.2. Hello jules caramel. In an interview information of H 20. It's 9 0. 285 0.8 you know jules, caramel and the entropy information of potassium hydroxide Equals -482 0.4 Children's promote for the entropy of the reaction. I have to the entropy information of potassium hydroxide finest to interview information potassium oxide. That's the entropy information Of H 20. So for the ndp of the reaction we get to I was making 482.4 Children's promote -0mega 363.2 villagers promote. That's negative. 285 0.8 Children's primal So the entropy of the reaction Is made of 315 0.8 will just promote. So now we need to find how much protesting hydroxide is produced. We have 315 0.8 hill jaws For every two moles of potassium hydroxide We have two moles. Oh potassium hydroxide and in one more of potassium hydroxide. We have the molar mass, Which is 39.098 g Plus 15.999 g. That's 1.008 g. Please give us 56 105 g. Would you give us 0. grams of potassium hydroxide. Archaeology is released. Thanks for watching my video and I hope it was helpful.