The bromination of methane proceeds through the following steps:
CH4 + Br· → · CH3 + HBr + 73 kJ (17 kcal) 79 kJ (19 kcal)
· CH3 + Br2 → CH3Br + Br· − 112 kJ (− 27 kcal) 4 kJ (1 kcal)
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Chapter 4 Solutions
Organic Chemistry (9th Edition)
- Ethanol, C₂H6O, is most often blended with gasoline - usually as a 10 percent mix - to create a fuel called gasohol. Ethanol is a renewable resource and ethanol-blended fuels, like gasohol, appear to burn more efficiently in combustion engines. The combustion of one mole of ethanol releases 326.7 kcal of energy. The combustion of one mole of 2-methylhexane, C7H16, releases 1.150 × 10³ kcal of energy. How much energy is released during the complete combustion of 450. grams of 2-methylhexane? kcal Assuming the same efficiency, would 450. grams of ethanol provide more, less, or the same amount of energy as 450. grams of 2- methylhexane?arrow_forwardGiven that the reaction of 4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 3 H2O (g) ΔΗ - 906 kJ What would AH for NO (g) + 3 H2O (g) → NH3 (g) + O2 (g) be? O 226.5 kJ O 453 kJ -226.5 kJ O 906 kJarrow_forwardDuring the combustion of 5.00 gg of octane, C8H18C8H18, 239.5 kcalkcal (1002 kJkJ) is released. what is the balanced equation for the combustion reaction? How much energy (in kJkJ) is released by the combustion of 1.21 molmol of C8H18C8H18 ? How many moles of octane must be burned to release 442.4 kcalkcal ? How many kilocalories are released by the combustion of 18.3 gg of C8H18C8H18 ?arrow_forward
- (a) The atomic weight of carbon is 12, hydrogen is 1 and oxygen is 16, and the formula for the combustion of methane (CH4) is given by : CH4 + 2 O2 –→ CO2 + 2 H2O + energy A mole of methane releases 810 KJ of energy on burning. Calculate the weight of carbon dioxide produced by burning 5kg of methane. Identify an alternative gas for combustion that produces less carbon dioxide than methane and state how it is generated.arrow_forwardBe sure to answer all parts. Determine Angas for each of the following reactions: (a) MgCO3(s) → MgO(s) + CO2(g) mol (b) 2 H2(g) + O2(g) → 2 H₂O(l) mol (c) HNO3(1) + CIF(g) → CIONO2(g) + HF(g) molarrow_forwardFor a particular isomer of Cg H₁g, the combustion reaction produces 5108.7 kJ of heat per mole of Cg H₁ (g) consumed, under standard conditions. C8H18 (g) + -25 0₂(g) →→→ 8 CO₂(g) + 9 H₂O(g) AH; = ΔΗ What is the standard enthalpy of formation of this isomer of Cg H₁8 (g)? 18 -208.5 Incorrect ▲Hixn = -5108.7 kJ/mol kJ/molarrow_forward
- A) Ethanol, C2H6O, is most often blended with gasoline - usually as a 10 percent mix - to create a fuel called gasohol. Ethanol is a renewable resource and ethanol-blended fuels, like gasohol, appear to burn more efficiently in combustion engines. The combustion of one mole of ethanol releases 326.7 kcal of energy.The combustion of one mole of 2-methylhexane, C7H16, releases 1.150×103 kcal of energy. How much energy is released during the complete combustion of 495 grams of 2-methylhexane ?------------- kcalAssuming the same efficiency, would 495 grams of ethanol provide more, less, or the same amount of energy as 495 grams of 2-methylhexane? --------- B) Combustion reactions are exothermic. The heat of reaction for the combustion of 2-methylheptane, C8H18, is 1.306×103 kcal/mol. What is the heat of combustion for 2-methylheptane in kcal/gram?--------- kcal/gramHow much heat will be given off if molar quantities of 2-methylheptane react according to the following equation? 2 C8H18+25…arrow_forward2. What is the theoretical yield of Compound Y if you have 8.55 g of Reactant X reacted with an excess of Cr2O72? Balance the chemical equation. OH Compound X (a) OH + Cr₂O72- OH ° Compound Y OH + Cr³+ Fill in the squares in the following chemical equations: NaOH/H₂O EtOHarrow_forwardCalculate AH for the reaction NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (g), from the following data. N2 (g) + O2 (g) → 2 NO (g) ΔΗ - 180.5 kJ / mol N2 (g) + 3 H2 (g) → 2 NH3 (g) /mol AH = - 91. 8 kJ 2 H2 (g) + O2 (g) → 2 H20 (g) AH ΔΗ- - 483. 6 kJ / molarrow_forward
- A nutritional calorie (kcal) is equal to 4.184 kJ. A can of Coca Cola contains 39 g of sugars. We will assume those sugars ultimately all get converted to 39 g of glucose (C6H12O6) in the body. Your body uses glucose in cellular respiration according to the following equation: C6H12O6(s) + 602(g) → 6CO2(g) + 6H₂O (1) a. Using enthalpies of formation provided on the reference page, how many kcal are contained in a can of Coca Cola? You can assume that all the calories in the drink are coming from sugar. b. While carbohydrates (like glucose) and protein provide about 4 nutritional calories per gram consumed, fats (lipids) provide about 9 nutritional calories per gram consumed. What does this tell you about the enthalpy of the reactions that consume fats compared to the enthalpy you determined above for the consumption of glucose?arrow_forwardEthanol, C2H6O, is most often blended with gasoline - usually as a 10 percent mix - to create a fuel called gasohol. Ethanol is a renewable resource and ethanol-blended fuels, like gasohol, appear to burn more efficiently in combustion engines. The heat of combustion of ethanol is 326.7 kcal/mol.The heat of combustion of 2-methylhexane, C7H16, is 1.150×103 kcal/mol. How much energy is released during the complete combustion of 452 grams of 2-methylhexane ?Assuming the same efficiency, would 452 grams of ethanol provide more, less, or the same amount of energy as 452 grams of 2-methylhexane?arrow_forwardEthanol, C2H6O, is most often blended with gasoline - usually as a 10 percent mix - to create a fuel called gasohol. Ethanol is a renewable resource and ethanol-blended fuels, like gasohol, appear to burn more efficiently in combustion engines. The heat of combustion of ethanol is 326.7 kcal/mol.The heat of combustion of 2-methylhexane, C7H16, is 1.150×103 kcal/mol. How much energy is released during the complete combustion of 446 grams of 2-methylhexane ?________ kcal Assuming the same efficiency, would 446 grams of ethanol provide more, less, or the same amount of energy as 446 grams of 2-methylhexane? _________. (more, less, or the same amount)arrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning