SCH4U Lee 2.5

1A1: Integrate existing knowledge of ionic/covalent bonding, lone pairs, formal charge, valence, and Lewis structures to generate chemically-correct organic building blocks. Examine the given line-angle structure and redraw it, correcting all errors of structure (bonding, lone pairs, formal charge, valence, and the octet rule). 14 H3C. CI- H3C CH3 O H3C B-CH3 N-CH3 CH3

(Picture attached)   Functional Groups:   1. Benzene 2. Halogen 3. Carboxyl 4. Hydroxyl Identify the functional groups that the 2 molecules contain. Note: each functional group can be used more than once.  Put in numerical order with no space.      Sucarlose =   Ibuprofen =

ow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-take [References] The combustion of 0.1562 g benzoic acid increases the temperature of a bomb calorimeter by 2.54°C. Calculate the heat capacity of this calorimeter. (The energy released by combustion of benzoic acid is 26.42 kJ/g.) Heat capacity kJ/°C A 0.2186-g sample of vanillin (C8 Hg O3) is then burned in the same calorimeter, and the temperature increases by 3.26°C. What is the energy of combustion per gram of vanillin? Energy kJ/g Per mole of vanillin? Energy kJ/mol

Balanced chemical equation for the combustion of ethanol as a reference. C₂H5OH (1)+30₂ (g) → 2 CO₂ (g) + 3 H₂O(g) C-H=410 kJ/mol Selected Bond Energies O-H=463 kJ/mol How much energy is required to break the bonds in ethanol? Show your work. C-O=358 kl/mol C-C= 348 kJ/mol H-C

Give one possibility for the mystery reactant R in this organic reaction: Pd R + H2 CH3-CH2-CH2-CH3 Specifically, in the drawing area below draw the condensed structure of what R might be. There may be more than one correct answer. Note: keep in mind that the equation above states R and H2 are present in a 1:1 mole ratio. No reaction. Click anywhere to draw the first atom of your structure. ☑ G ☐ : ☐ टे

Consider the acid-base reaction between iodoethane (CH3CH2I) and hydroxide (-OH). CH3CH2I + OH- --> CH3CH2OH + l- Use the table of bond energies to estimate the change in enthalpy (∆H in kJ/mol) for this reaction. Think about the bonds that are broken and that are formed.  This reaction is endothermic, exothermic or energy neutral   Using your calculation, what can you say about the strengths of the bonds?  -The bonds before the reaction are stronger than the bonds after the reaction. -The bonds after the reaction are stronger than the bonds before the reaction.  or -The bonds before and after the reaction are equivalent in strength.

7. Estimate the enthalpy of reaction (in kJ/mol) for the combustion of methane. Be sure to show a lewis structure for each molecule. CH, (g) + 20, (g) ·CO, (g) + H,O (g) Bond Bond Enthalpy (kJ/mol) C-O 351 C=0 799 CEO 1070 O-O 142 O=0 498 C-H 414 O-H 460

Nucleotides are molecules that make up the structures of RNA and DNA. Modify the compounds to create adenosine monophosphate (AMP).

9:06 AA A 123 Browse 8+ million homework and textbook solutions, concept explainers, videos and more. Natural gas is used as a cooking fuel in many restaurants and homes. The primary chemical components of natural gas are hydrocarbons know as alkanes. Alkanes are flammable gases. Explain based on your knowledge of categories of gases why this is superior choice compared to, for example, nitrogen or oxygen gas. Add Image I bartleby.com S QWE R T YU | Ο Ρ N D You Ok Done D F GH J K L XCV BN M space return

Using bond energies and the energy change of the reaction, calculate the bond energy of the CH single bond. Do not round your answer. C4H10 is butane 2C4H10 + 13O2 → 8CO2 + 10H2O . Bond Energy(kJ/mol) C-C 346 O=O 495 C=O 805 O-H 459 Reaction energy(kJ) -5329

Which of these is a hydroxyl group? A large organic molecule with different functional groups. A group marked A consists of a nitrogen atom and two hydrogen atoms attached to it. A group marked B consists of a phosphorus atom with four oxygen atoms. One of these oxygen atoms is connected to the phosphorus by a double bond. All other bonds are single. Two oxygen atoms have negative charges. A group marked C consists of a carbon atom connected to an oxygen atom by a double bond. A group marked D consists of an oxygen atom connected to a hydrogen atom. The group marked E consists of a sulfur atom connected with a hydrogen atom. A group marked F consists of a carbon atom, which is connected to one oxygen atom by a double bond and the other oxygen atom by a single bond. This last mentioned oxygen atom also has a hydrogen attached. EDACF

This class of organic compounds is unsaturated with one or more carbon-carbon triple bonds. O Alkynes O Alkenes Alkanes Arenes The first member of the aromatic hydrocarbons. C6H6 C6H8 C6H10 C6H12 The molecular formula of the compound isolated by Michael Faraday from the oily residue left by illuminating gas in London street lamps. OC6H6 OC6H8 O C6H10 OC6H12

Hydrogen cyanide can be catalytically reduced with hydro-gen to form methylamine. Use Lewis structures and bond ener-gies to determine ΔH°ᵣₓₙ for HCN(g)+2H₂(g)→CH₃NH₂(g)

Using bond energies and the energy change of the reaction, calculate the bond energy of the CO double bond. Do not round your answer. C3H8 is propane C3H8 + 5O2 → 3CO2 + 4H2O . Bond Energy(kJ/mol) C-H 411 C-C 346 O=O 495 O-H 459 Reaction energy(kJ) -2047

Do the question of ethalpy

Give one possibility for the mystery reactant R in this organic reaction: R+ H₂ Ni - No reaction. CH3 CH2CH3 Specifically, in the drawing area below draw the condensed structure of what R might be. There may be more than one correct answer. Note: keep in mind that the equation above states R and H₂ are present in a 1:1 mole ratio. Click anywhere to draw the first atom of your structure. X Ś 2

Give one possibility for the mystery reactant R in this organic reaction: Pd R+H2 CH3 CH3-CH2-CH2-CH-CH3 Specifically, in the drawing area below draw the condensed structure of what R might be. There may be more than one correct answer. Note: keep in mind that the equation above states R and H2 are present in a 1:1 mole ratio. Click anywhere to draw the first atom of your structure. 口:用 C

Determine the structures of the missing organic molecules in the following reaction: H+ 뿜 XI + H₂O H+ Y Z Note: Molecules that share the same letter have the exact same structure. In the drawing area below, draw the skeletal ("line") structures of the missing organic molecules X, Y, and Z. You may draw the structures in any arrangement that you like, so long as they aren't touching. Molecule X shows up in multiple steps, but you only have to draw its structure once. Click and drag to start drawing a structure. X Ś

Identifying organic functional groups Name the family to which each organiC compound belongs. The first answer has been filled in for you. compound family ester CH,– CH,– -0–C – CH, CH; CH, — о — с —Н CH, NH, – C=O CH, Check Explanation O2021 McGraw Hill LLC. All Rights Reserved. Terms ||

Formation of ammonia from nitrogen and hydrogen is an exothermic process.  Which of the following statements is true about the bonds that are broken and formed during this reaction? N2(g) + 3H2(g) --->  2NH3(g) a.) products have lower PE because product bonds are weaker than reactants b.) products have higher PE because product bonds are stronger than reactants c.) products have higher PE because product bonds are weaker than reactants d.) products have lower PE because product bonds are stronger than reactants

Using bond energies from the table, estimate ΔH for the reaction below. The OH group on the product side is attached to a carbon.CH2=CH2(g) + H2O(g) ↔ CH3CH2OH(g) Bond Energies, kJ/mol Single Bonds   H C N O S F Cl Br I H 432                 C 411 346               N 386 305 167             O 459 358 201 142           S 363 272 --- --- 286         F 565 485 283 190 284 155       Cl 428 327 313 218 255 249 240     Br 362 285 243 201 217 249 216 190   I 295 213 --- 201 --- 278 208 175 149 Multiple Bonds C=C 602 C=N 615 C=O 799 CºC 835 CºN 887 CºO 1072 N=N 418 N=O 607 S=O (in SO2) 532 NºN 942 O2 494 S=O (in SO3) 469

These two different C2H6O compounds are called structural (or constitutional) isomers - compounds with the same molecular formula but with different connections among their constituent atoms. If you must break and make new bonds in order to convert one structure into the other (not simply rotate the model around), then they are structural isomers. The concept of isomers is very important in organic chemistry and biochemistry. This is also another instance where condensed formulas can be very useful because they can help you distinguish two isomers apart even when you don't have models. Exercise 8) Can your models be interconverted by rotating bonds, or must the bonds be broken first? What does that mean about these two structures?

Determine the structures of the missing organic molecules in the following reaction: + H₂O H+ O OH Note: Molecules that share the same letter have the exact same structure. H* X Y In the drawing area below, draw the skeletal ("line") structures of the missing organic molecules X and Y. You may draw the structures in any arrangement that you like, so long as they aren't touching. Molecule X shows up in multiple steps, but you only have to draw its structure once. Click and drag to start drawing a structure. 0 X 0 :0

Determine the structures of the missing organic molecules in the following reaction: ex + H₂O H* X O OH H+ X Note: Molecules that share the same letter have the exact same structure. In the drawing area below, draw the skeletal ("line") structures of the missing organic molecules X and Y. You may draw the structures in any arrangement that you like, so long as they aren't touching. Molecule X shows up in multiple steps, but you only have to draw its structure once. Click and drag to start drawing a structure. C C X c+