mod-5-revision-guide-4-transition-metals
... Cr3+ (green) and then Cr2+ (blue) are formed by reduction of Cr2O72- (orange) by the strong reducing agent zinc in (HCl) acid solution. Fe2+ is a less strong reducing agent and will only reduce the dichromate to Cr3+ . The Fe2+ and Cr2O7 2- in acid solution reaction can be used as a quantitative red ...
... Cr3+ (green) and then Cr2+ (blue) are formed by reduction of Cr2O72- (orange) by the strong reducing agent zinc in (HCl) acid solution. Fe2+ is a less strong reducing agent and will only reduce the dichromate to Cr3+ . The Fe2+ and Cr2O7 2- in acid solution reaction can be used as a quantitative red ...
Name: ______KEY__________________ Date: ______ CHM 130
... (5 pts) A nitric acid solution that is 70.0% HNO3 by mass contains 70.0 g of HNO3 and 100.0 g water. 70.0 mol HNO3. 70.0 g HNO3 and 30.0 g water. 70.0 g HNO3 and 70.0 g water. ...
... (5 pts) A nitric acid solution that is 70.0% HNO3 by mass contains 70.0 g of HNO3 and 100.0 g water. 70.0 mol HNO3. 70.0 g HNO3 and 30.0 g water. 70.0 g HNO3 and 70.0 g water. ...
mass-mass problems.
... reaction (substance A) and asked to calculate the mass of a different substance in the reaction (substance B). This will be a 3-step dimensional analysis conversion. 1. Convert grams of A to moles of A using the molar mass of A. 2. Convert moles of A to moles of B using the coefficients from the bal ...
... reaction (substance A) and asked to calculate the mass of a different substance in the reaction (substance B). This will be a 3-step dimensional analysis conversion. 1. Convert grams of A to moles of A using the molar mass of A. 2. Convert moles of A to moles of B using the coefficients from the bal ...
Unit 8 Student Notes
... Consider the generic reaction while studying the diagram: A B. You’re beginning with only reactants (A) and you have zero products (B). The concentration of the products [B] begins to increase as the concentration of the reactants [A] decreases. As soon as product particles exist, the reverse reac ...
... Consider the generic reaction while studying the diagram: A B. You’re beginning with only reactants (A) and you have zero products (B). The concentration of the products [B] begins to increase as the concentration of the reactants [A] decreases. As soon as product particles exist, the reverse reac ...
1.6 Energy changes in chemical reactions
... Many of the devices that we use every day—including mobile phones—depend on batteries. Electric cars offer a low pollution future, but a big limitation is the size and cost of their batteries. Chemistry is at the heart of research to find new, lighter, low-cost batteries that are quickly charged. In ...
... Many of the devices that we use every day—including mobile phones—depend on batteries. Electric cars offer a low pollution future, but a big limitation is the size and cost of their batteries. Chemistry is at the heart of research to find new, lighter, low-cost batteries that are quickly charged. In ...
Molecular Compound
... Characteristics of the Covalent Bond • Bond Length - The distance between two bonded atoms at their minimum potential energy (the average distance between two bonded atoms) • Bond Energy - the energy required to break a chemical bond and form neutral isolated atoms • Equal to the difference in the p ...
... Characteristics of the Covalent Bond • Bond Length - The distance between two bonded atoms at their minimum potential energy (the average distance between two bonded atoms) • Bond Energy - the energy required to break a chemical bond and form neutral isolated atoms • Equal to the difference in the p ...
Net ionic equation
... somewhat surprising that ionic compounds will dissolve in water. The reason some ionic compounds will dissolve in water is because the water molecules have a partial negative charge on the oxygen atom (-) and partial positive charges on the hydrogen atoms (+), where “” indicates a small positive ...
... somewhat surprising that ionic compounds will dissolve in water. The reason some ionic compounds will dissolve in water is because the water molecules have a partial negative charge on the oxygen atom (-) and partial positive charges on the hydrogen atoms (+), where “” indicates a small positive ...
Kinetics
... increased, a greater number of molecular collisions possess enough energy to activate the reaction (activation energy). Frequency of collisions increases - an increase in temperature makes particles move faster and collide more frequently, increasing the possibility of a reaction between them. ...
... increased, a greater number of molecular collisions possess enough energy to activate the reaction (activation energy). Frequency of collisions increases - an increase in temperature makes particles move faster and collide more frequently, increasing the possibility of a reaction between them. ...
379 - FTP
... Formula: H2S; MW 34.08 Synonyms: sulfur hydride; sulfureted hydrogen Occurrence and Uses Hydrogen sulfide occurs in natural gas. It also is found in many sewer gases. It is a by-product of many industrial processes. Trace amounts of dissolved H2S are found in wastewaters in equilibrium with dissolve ...
... Formula: H2S; MW 34.08 Synonyms: sulfur hydride; sulfureted hydrogen Occurrence and Uses Hydrogen sulfide occurs in natural gas. It also is found in many sewer gases. It is a by-product of many industrial processes. Trace amounts of dissolved H2S are found in wastewaters in equilibrium with dissolve ...
Unit 7 Homework and Lab Packet
... copper(II)sulfate crystals. 4. Obtain two clean, dry iron nails from your teacher. If the nails are not clean, use a piece of sand paper or steel wool to make the surface of the nail shiny. Find the mass of the nails and record. 5. Place the nails in to the copper(II)sulfate solution. Leave them und ...
... copper(II)sulfate crystals. 4. Obtain two clean, dry iron nails from your teacher. If the nails are not clean, use a piece of sand paper or steel wool to make the surface of the nail shiny. Find the mass of the nails and record. 5. Place the nails in to the copper(II)sulfate solution. Leave them und ...
NEW MONO- AND DINUCLEAR RUTHENIUM COMPLEXES CONTAINING THE 3,5-BIS(2- PYRIDYL)PYRAZOLE LIGAND. SYNTHESIS,
... synthesized and characterized by means of structural, spectroscopic and electrochemical techniques. These complexes have the formula [Ru2(µ-X)(bpp)(trpy)2]2+, where X = Cl, 1, and acetate, 2. The chloro and acetato bridges can be hydrolyzed in basic and acidic media, respectively, to generate the di ...
... synthesized and characterized by means of structural, spectroscopic and electrochemical techniques. These complexes have the formula [Ru2(µ-X)(bpp)(trpy)2]2+, where X = Cl, 1, and acetate, 2. The chloro and acetato bridges can be hydrolyzed in basic and acidic media, respectively, to generate the di ...
File - UTeach Dallas Project
... Knowledge with understanding The candidates should be able to demonstrate knowledge and understanding in relation to:(a) scientific phenomena, facts, concepts, theories and laws. (b) scientific terminology, use of symbols, quantities and units. (c) scientific apparatus and instruments and their safe ...
... Knowledge with understanding The candidates should be able to demonstrate knowledge and understanding in relation to:(a) scientific phenomena, facts, concepts, theories and laws. (b) scientific terminology, use of symbols, quantities and units. (c) scientific apparatus and instruments and their safe ...
AP Chemistry:
... Use your time effectively, working as quickly as you can without losing accuracy. Do not spend too much time on any one question. Go on to other questions and come back to the ones you have not answered if you have time. It is not expected that everyone will know the answers to all of the multiple-c ...
... Use your time effectively, working as quickly as you can without losing accuracy. Do not spend too much time on any one question. Go on to other questions and come back to the ones you have not answered if you have time. It is not expected that everyone will know the answers to all of the multiple-c ...
Introduction to Qualitative Analysis
... remember that we prepared and then analyzed the “green crystals”, K3Fe(C2O4)3(H2O)3. Qualitative analysis of this ionic compound could be used to reveal that iron, potassium and oxalate ions are present. It could also be used to determine that the iron is in its +3 oxidation state and that the subst ...
... remember that we prepared and then analyzed the “green crystals”, K3Fe(C2O4)3(H2O)3. Qualitative analysis of this ionic compound could be used to reveal that iron, potassium and oxalate ions are present. It could also be used to determine that the iron is in its +3 oxidation state and that the subst ...
5.1 questions - DrBravoChemistry
... Write an expression showing the relationship between free-energy change, ∆G, enthalpy change, ∆H, and entropy change, ∆S. ...
... Write an expression showing the relationship between free-energy change, ∆G, enthalpy change, ∆H, and entropy change, ∆S. ...
IB Chemistry HL Topic5 Questions 1. Which combination of ionic
... Calculate the standard free energy change at 298 K, GӨ, for the reaction in part (a). Use your answer and relevant information from part (d). If you did not obtain an answer to part (a), use SӨ = –360 J K–1 (this is not the correct value). ...
... Calculate the standard free energy change at 298 K, GӨ, for the reaction in part (a). Use your answer and relevant information from part (d). If you did not obtain an answer to part (a), use SӨ = –360 J K–1 (this is not the correct value). ...
Chapter 9 Stoichiometry
... d) When the reaction is done, is there any Fe2O3 left over? How much? ...
... d) When the reaction is done, is there any Fe2O3 left over? How much? ...
M.Sc.Course - Department of Chemistry, IIT Bombay
... of esters, amides and nitriles, esterification, transesterification, conversion of acid into acid derivatives, making ketones and aldehydes from esters. Nucleophilic substitution at C=O with the loss of carbonyl oxygen: acetals, cyclic acetals, thioketal, imines, enamines, reductive amination, alter ...
... of esters, amides and nitriles, esterification, transesterification, conversion of acid into acid derivatives, making ketones and aldehydes from esters. Nucleophilic substitution at C=O with the loss of carbonyl oxygen: acetals, cyclic acetals, thioketal, imines, enamines, reductive amination, alter ...
Covalent Bonding and Molecular Structure
... related to the fact that valence shells contain a single s orbital and three p orbitals that can accommodate up to eight electrons, and it is these orbitals that are most often involved in forming covalent bonds between nonmetals in covalent compounds. When determining whether elements have satisfie ...
... related to the fact that valence shells contain a single s orbital and three p orbitals that can accommodate up to eight electrons, and it is these orbitals that are most often involved in forming covalent bonds between nonmetals in covalent compounds. When determining whether elements have satisfie ...
Preliminary Screening — Technical and Economic Assessment of Synthesis Gas
... production operation in a gas-to-liquids plant amounts to greater than half of the capital cost of the plant. The choice of technology for syngas production also depends on the scale of the synthesis operation. Syngas production from solid fuels can require an even greater capital investment with th ...
... production operation in a gas-to-liquids plant amounts to greater than half of the capital cost of the plant. The choice of technology for syngas production also depends on the scale of the synthesis operation. Syngas production from solid fuels can require an even greater capital investment with th ...
The First Steps of Chemical Evolution towards the
... primitive systems. Based on these ideas and results, it seems reasonable to concentrate the further discussion of the first steps of chemical evolution to the possibilities to form amino acids, their oligomers, and polymers rather than to speculate on the complicated assembly of nucleotides and thei ...
... primitive systems. Based on these ideas and results, it seems reasonable to concentrate the further discussion of the first steps of chemical evolution to the possibilities to form amino acids, their oligomers, and polymers rather than to speculate on the complicated assembly of nucleotides and thei ...
Notes
... At 25 °C, the reaction I2(g) + Cl2((g) ' 2 ICl(g) has an equilibrium constant KP = 81.9. Initially a reaction mixture at this temperature contains PI2 = 0.100 atm, PCl2 = 0.100 atm and PICl = 0.100 atm. Calculate the equilibrium partial pressures of I2, Cl2, and ICl. ...
... At 25 °C, the reaction I2(g) + Cl2((g) ' 2 ICl(g) has an equilibrium constant KP = 81.9. Initially a reaction mixture at this temperature contains PI2 = 0.100 atm, PCl2 = 0.100 atm and PICl = 0.100 atm. Calculate the equilibrium partial pressures of I2, Cl2, and ICl. ...
A Lead-Filled G-Quadruplex: Insight into the G
... cations with affinity and selectivity. In addition to represent(8) Zimmerman, S. C.; Schmitt, P. J. Am. Chem. Soc. 1995, 117, 1076910770. (9) Sessler, J. L.; Sathiosatham, M.; Doerr, K.; Lynch, V.; Abboud, K. A. Angew. Chem., Int. Ed. Engl. 2000, 39, 1300-1303. (10) (a) Forman, S. L.; Fettinger, J. ...
... cations with affinity and selectivity. In addition to represent(8) Zimmerman, S. C.; Schmitt, P. J. Am. Chem. Soc. 1995, 117, 1076910770. (9) Sessler, J. L.; Sathiosatham, M.; Doerr, K.; Lynch, V.; Abboud, K. A. Angew. Chem., Int. Ed. Engl. 2000, 39, 1300-1303. (10) (a) Forman, S. L.; Fettinger, J. ...