visual problems - Western Oregon University
... a. Use the appropriate ∆G°f value(s) from Appendix 4 to calculate ∆G°rxn for the reaction known as steam–methane reforming: CH4(g) + H2O(g) → CO(g) + 3 H2(g) b. To drive this nonspontaneous reaction the CO that is produced can be oxidized to CO 2 using more steam: CO(g) + H2O(g) → CO2(g) + H2(g) Us ...
... a. Use the appropriate ∆G°f value(s) from Appendix 4 to calculate ∆G°rxn for the reaction known as steam–methane reforming: CH4(g) + H2O(g) → CO(g) + 3 H2(g) b. To drive this nonspontaneous reaction the CO that is produced can be oxidized to CO 2 using more steam: CO(g) + H2O(g) → CO2(g) + H2(g) Us ...
CHAPTER 21 NONMETALLIC ELEMENTS AND THEIR COMPOUNDS
... Table 19.1 of the text shows that magnesium metal has the potential to be an extremely powerful reducing agent. It appears inert at room temperature, but at high temperatures it can react with almost any source of oxygen atoms (including water!) to form MgO. In this case carbon dioxide is reduced to ...
... Table 19.1 of the text shows that magnesium metal has the potential to be an extremely powerful reducing agent. It appears inert at room temperature, but at high temperatures it can react with almost any source of oxygen atoms (including water!) to form MgO. In this case carbon dioxide is reduced to ...
PowerPoint - Chemistry Geek
... magnitude of ΔH remains the same, but its sign changes. 2. When the balanced equation for a reaction is multiplied by an integer, the value of ΔH for that reaction must be multiplied by the same integer. ...
... magnitude of ΔH remains the same, but its sign changes. 2. When the balanced equation for a reaction is multiplied by an integer, the value of ΔH for that reaction must be multiplied by the same integer. ...
MERIDIAN PUBLIC SCHOOL DISTRICT
... Energy (in calories and joules) required to change the Page 5 ...
... Energy (in calories and joules) required to change the Page 5 ...
chemistry-subject test5 w. solutions
... The ideal gas law assumes (among other things) that there are no intermolecular forces among the gas particles, which hold the molecules tighter together, leading to a smaller volume than that predicted by the ideal gas law. Intermolecular forces among neutral particles are due to hydrogen bonding, ...
... The ideal gas law assumes (among other things) that there are no intermolecular forces among the gas particles, which hold the molecules tighter together, leading to a smaller volume than that predicted by the ideal gas law. Intermolecular forces among neutral particles are due to hydrogen bonding, ...
Regents Chemistry Topic Review Packet
... 4. A physical change results in the rearrangement of existing particles in a substance; no new types of particles result from this type of change. A chemical change results in the formation of different particles with changed properties. Distinguish between chemical and physical changes based on w ...
... 4. A physical change results in the rearrangement of existing particles in a substance; no new types of particles result from this type of change. A chemical change results in the formation of different particles with changed properties. Distinguish between chemical and physical changes based on w ...
Document
... A metal pellet with a mass of 100.0 g, originally at 88.4°C, is dropped into 125 g of water originally at 25.1°C. The final temperature of both pellet and the water is 31.3°C. Calculate the heat capacity C (in J/°C) of the pellet. Strategy Water constitutes the surroundings; the pellet is the system ...
... A metal pellet with a mass of 100.0 g, originally at 88.4°C, is dropped into 125 g of water originally at 25.1°C. The final temperature of both pellet and the water is 31.3°C. Calculate the heat capacity C (in J/°C) of the pellet. Strategy Water constitutes the surroundings; the pellet is the system ...
File - Varsity Field
... • Ag+ ions accept electrons from copper – reduced to Ag (s). Ag+ is the oxidising agent. • Ag+ (aq) + e→ Ag (s) • Cu (s) donates electrons to Ag+ (aq) – oxidised to Cu2+ (aq). Cu is the reducing agent. • Cu (s) ...
... • Ag+ ions accept electrons from copper – reduced to Ag (s). Ag+ is the oxidising agent. • Ag+ (aq) + e→ Ag (s) • Cu (s) donates electrons to Ag+ (aq) – oxidised to Cu2+ (aq). Cu is the reducing agent. • Cu (s) ...
AP Chemistry 2015-‐‑2016 Name: Chapter 5: Thermodynamics
... l) State function Property of system that is determined by specifying conditions or its state ...
... l) State function Property of system that is determined by specifying conditions or its state ...
Chemistry in engineering curriculum Prisedsky V.V. (DonNTU
... science in its own right. Chemistry is often maligned - we are the guys who are fouling the atmosphere, we have the stinky plants, and so on. But we are also the guys who can produce essential materials and compounds that are touching all of our lives»[2]. Specifically, why is chemistry important i ...
... science in its own right. Chemistry is often maligned - we are the guys who are fouling the atmosphere, we have the stinky plants, and so on. But we are also the guys who can produce essential materials and compounds that are touching all of our lives»[2]. Specifically, why is chemistry important i ...
Chapter 5 Thermochemistry - Byron Senior High School
... Comment: You can think of this change as a decrease of 670 J in the net value of the system’s energy bank account (hence the negative sign); 1150 J is withdrawn in the form of heat, while 480 J is deposited in the form of work. Notice that as the volume of the gases decreases, work is being done on ...
... Comment: You can think of this change as a decrease of 670 J in the net value of the system’s energy bank account (hence the negative sign); 1150 J is withdrawn in the form of heat, while 480 J is deposited in the form of work. Notice that as the volume of the gases decreases, work is being done on ...
Chemistry 30 June 2001 Grade 12 Diploma Examination
... greater than it is during cellular respiration because the production of H2O(g) releases more energy than does the production of H2O(l) less than it is during cellular respiration because the production of H2O(g) releases less energy than does the production of H2O(l) the same as it is in the body b ...
... greater than it is during cellular respiration because the production of H2O(g) releases more energy than does the production of H2O(l) less than it is during cellular respiration because the production of H2O(g) releases less energy than does the production of H2O(l) the same as it is in the body b ...
Chapter 4: Aqueous Reactions and Solution Stoichiometry
... What is reduced is the oxidizing agent. H+ oxidizes Zn by taking electrons from it. What is oxidized is the reducing agent. Zn reduces H+ by giving it electrons. ...
... What is reduced is the oxidizing agent. H+ oxidizes Zn by taking electrons from it. What is oxidized is the reducing agent. Zn reduces H+ by giving it electrons. ...
Answers to examination questions
... B is trigonal planar (bond angles 120°); A, C and D are based upon a tetrahedral arrangement with four regions of high electron density. However, the water molecule has two lone pairs around the central atom, compared with one for ammonia and none for methane. Lone pair repulsion is greater than bon ...
... B is trigonal planar (bond angles 120°); A, C and D are based upon a tetrahedral arrangement with four regions of high electron density. However, the water molecule has two lone pairs around the central atom, compared with one for ammonia and none for methane. Lone pair repulsion is greater than bon ...
physical setting chemistry
... Record the number of your choice for each Part A and Part B–1 multiple-choice question on your separate answer sheet. Write your answers to the Part B–2 and Part C questions in your answer booklet. All work should be written in pen, except for graphs and drawings, which should be done in pencil. You ...
... Record the number of your choice for each Part A and Part B–1 multiple-choice question on your separate answer sheet. Write your answers to the Part B–2 and Part C questions in your answer booklet. All work should be written in pen, except for graphs and drawings, which should be done in pencil. You ...
Limiting Reactants and Percentage Yield
... Sample Problem G The black oxide of iron, Fe3O4, occurs in nature as the mineral magnetite. This substance can also be made in the laboratory by the reaction between red-hot iron and steam according to the following equation. 3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g) a. When 36.0 g H2O are mixed with ...
... Sample Problem G The black oxide of iron, Fe3O4, occurs in nature as the mineral magnetite. This substance can also be made in the laboratory by the reaction between red-hot iron and steam according to the following equation. 3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g) a. When 36.0 g H2O are mixed with ...
File
... Molar heat capacity • The amount of heat which required to raise the temperature of one mole of substance by 1°C molar heat capacity = specific heat x M.wt. ...
... Molar heat capacity • The amount of heat which required to raise the temperature of one mole of substance by 1°C molar heat capacity = specific heat x M.wt. ...
Unit 8 Student Notes
... ends of nearby water molecules; anions are attracted to the positive ends of nearby water molecules. If the attraction is strong enough, the anion will be pulled away from the surface of the crystal. This process is called dissolution (the general term for all solvents and solutes is dissociation). ...
... ends of nearby water molecules; anions are attracted to the positive ends of nearby water molecules. If the attraction is strong enough, the anion will be pulled away from the surface of the crystal. This process is called dissolution (the general term for all solvents and solutes is dissociation). ...
KS4-Chemical-Reactions
... • There are some simple rules that can be used to move the position of an equilibrium towards reactants or products: 1. Exothermic reactions give more product at lower temperatures. (Endothermic – the opposite) 2. Increasing the pressure in gas reactions favours whichever side of the chemical equati ...
... • There are some simple rules that can be used to move the position of an equilibrium towards reactants or products: 1. Exothermic reactions give more product at lower temperatures. (Endothermic – the opposite) 2. Increasing the pressure in gas reactions favours whichever side of the chemical equati ...
Fluorinated Butatrienes - diss.fu-berlin.de
... The present study provides deeper insight into the chemistry of fluorinated butatrienes both experimentally and theoretically. The four step synthesis of tetrafluorobutatriene starting from commercially available 1,1difluoroethylene could be successfully improved to an overall yield of up to 42% (fr ...
... The present study provides deeper insight into the chemistry of fluorinated butatrienes both experimentally and theoretically. The four step synthesis of tetrafluorobutatriene starting from commercially available 1,1difluoroethylene could be successfully improved to an overall yield of up to 42% (fr ...
OCR answers to the examination questions File
... (ii) In benzene the π electrons are spread over the whole ring structure, as they are delocalised. When cyclohexene is reacted with bromine the bromine is polarised by the double bond. However, when benzene is reacted with bromine, the bromine cannot be polarised by the ring as the electrons ar ...
... (ii) In benzene the π electrons are spread over the whole ring structure, as they are delocalised. When cyclohexene is reacted with bromine the bromine is polarised by the double bond. However, when benzene is reacted with bromine, the bromine cannot be polarised by the ring as the electrons ar ...
Bioorthogonal chemistry
The term bioorthogonal chemistry refers to any chemical reaction that can occur inside of living systems without interfering with native biochemical processes. The term was coined by Carolyn R. Bertozzi in 2003. Since its introduction, the concept of the bioorthogonal reaction has enabled the study of biomolecules such as glycans, proteins, and lipids in real time in living systems without cellular toxicity. A number of chemical ligation strategies have been developed that fulfill the requirements of bioorthogonality, including the 1,3-dipolar cycloaddition between azides and cyclooctynes (also termed copper-free click chemistry), between nitrones and cyclooctynes, oxime/hydrazone formation from aldehydes and ketones, the tetrazine ligation, the isocyanide-based click reaction, and most recently, the quadricyclane ligation.The use of bioorthogonal chemistry typically proceeds in two steps. First, a cellular substrate is modified with a bioorthogonal functional group (chemical reporter) and introduced to the cell; substrates include metabolites, enzyme inhibitors, etc. The chemical reporter must not alter the structure of the substrate dramatically to avoid affecting its bioactivity. Secondly, a probe containing the complementary functional group is introduced to react and label the substrate.Although effective bioorthogonal reactions such as copper-free click chemistry have been developed, development of new reactions continues to generate orthogonal methods for labeling to allow multiple methods of labeling to be used in the same biosystems.