7) Propane is a gas commonly used to fuel gas grills and camping stoves. The structure of propane is shown below. TABLE 8.4 Average Bond Enthalpies (k)/mol) Single Bonds C-H C-C C-N O-H O-O O-F O-CI 413 348 N-H N-N N-O 391 163 463 F-F 155 146 H 293 201 190 C-F 253 C-CI 242 C-O C-F 358 N-F 272 203 N-CI N-Br 485 200 234 H H C-CI C-Br 328 276 240 259 Br-F 237 Br-CI 218 Br-Br 193 243 S-H S-F S-CI S-Br S-S 339 327 253 218 266 Propane C-I C-S H-H H-F H-CI H-Br H-I 436 567 431 366 299 -CI -Br 208 175 151 Si-H Si-Si SiC Si-O 323 226 301 368 Multiple Bonds C-C N-N 614 839 615 891 799 1072 418 495 941 607 NEN N=O SO 523 418 a) Write the balanced chemical equation for the combustion of propane. b) Draw out lewis dot structures to represent all molecules of all products and reactants in this reaction. The number of each molecule should be reflected in the balanced equation. c) Calculate the heat of combustion for propane using the bond enthalpies in the table. d) 1.00 mol of propane is used to roast marshmallows. It was determined that the amount of energy absorbed by the marshmallows was only 800 kJ. Explain this observation.
Types of Chemical Bonds
The attractive force which has the ability of holding various constituent elements like atoms, ions, molecules, etc. together in different chemical species is termed as a chemical bond. Chemical compounds are dependent on the strength of chemical bonds between its constituents. Stronger the chemical bond, more will be the stability in the chemical compounds. Hence, it can be said that bonding defines the stability of chemical compounds.
Polarizability In Organic Chemistry
Polarizability refers to the ability of an atom/molecule to distort the electron cloud of neighboring species towards itself and the process of distortion of electron cloud is known as polarization.
Coordinate Covalent Bonds
A coordinate covalent bond is also known as a dative bond, which is a type of covalent bond. It is formed between two atoms, where the two electrons required to form the bond come from the same atom resulting in a semi-polar bond. The study of coordinate covalent bond or dative bond is important to know about the special type of bonding that leads to different properties. Since covalent compounds are non-polar whereas coordinate bonds results always in polar compounds due to charge separation.
Combustion Reaction:
It is the reaction in which a substance reacts with the oxygen gas and releases carbon dioxide and water.
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 4 images
