File
... several minutes to remove excess H2O2. If solution is green, add more H2O2. (yellow is okay) Look for separation of precipitate and supernatant. Centrifuge, decant and obtain residue 2 for step 6, and decantate 2 for step 12. Do not discard. If necessary, recentrifuge decantate 2 until absolutely cl ...
... several minutes to remove excess H2O2. If solution is green, add more H2O2. (yellow is okay) Look for separation of precipitate and supernatant. Centrifuge, decant and obtain residue 2 for step 6, and decantate 2 for step 12. Do not discard. If necessary, recentrifuge decantate 2 until absolutely cl ...
Chromatographic Enrichment of Lithium Isotopes by Hydrous
... the ion exchanger phase. Oi et al.7 investigated the lithium isotope effect in aqueous ion exchange systems by cation exchange chromatography. They obtained the value of the separation factor of 1.00089-1.00171 at 25 oC. Kim et al. 8 also investigated the separation of lithium isotopes with 1,7,13-t ...
... the ion exchanger phase. Oi et al.7 investigated the lithium isotope effect in aqueous ion exchange systems by cation exchange chromatography. They obtained the value of the separation factor of 1.00089-1.00171 at 25 oC. Kim et al. 8 also investigated the separation of lithium isotopes with 1,7,13-t ...
C. 3.5 g
... 51. When 10.6 g of anhydrous sodium carbonate was added to 200.0 cm3 of 1.0 M sulphuric acid at room conditions, the reaction stopped in 40 seconds. At the same time, 2400 cm3 of carbon dioxide was produced. Which of the following statements about the reaction is INCORRECT? ...
... 51. When 10.6 g of anhydrous sodium carbonate was added to 200.0 cm3 of 1.0 M sulphuric acid at room conditions, the reaction stopped in 40 seconds. At the same time, 2400 cm3 of carbon dioxide was produced. Which of the following statements about the reaction is INCORRECT? ...
Document
... 2) TERNARY COMPOUND: Any substance made of three different elements a) A ternary ionic compound will have a polyatomic ion b) A ternary covalent compound will not have a polyatomic ion ...
... 2) TERNARY COMPOUND: Any substance made of three different elements a) A ternary ionic compound will have a polyatomic ion b) A ternary covalent compound will not have a polyatomic ion ...
Test 1 w/answers
... 8. The osmotic pressure of a solution of 20.00 g NaOH (MMNaOH = 40.0 g/mol) dissolved in a total volume of 500.0 mL was compared to the osmotic pressure of a solution of 14.61 g of NaCl (MMNaCl = 58.44 g/mol) dissolved in a total volume of 250.0 mL. Is the osmotic pressure of the NaOH solution highe ...
... 8. The osmotic pressure of a solution of 20.00 g NaOH (MMNaOH = 40.0 g/mol) dissolved in a total volume of 500.0 mL was compared to the osmotic pressure of a solution of 14.61 g of NaCl (MMNaCl = 58.44 g/mol) dissolved in a total volume of 250.0 mL. Is the osmotic pressure of the NaOH solution highe ...
Density functional theory and FTIR spectroscopic study of carboxyl
... derivatives in aqueous solution were conducted32, and results were compared with DFT. The intramolecular hydrogen bonding of salicylic acid was further studied33. Both kinetic and chemical modification analysis suggested that carboxylate and carboxyl groups are involved directly in the enzymatic rea ...
... derivatives in aqueous solution were conducted32, and results were compared with DFT. The intramolecular hydrogen bonding of salicylic acid was further studied33. Both kinetic and chemical modification analysis suggested that carboxylate and carboxyl groups are involved directly in the enzymatic rea ...
Physical chemistry and transition elements 5.1 Rates, equilibrium
... A d-block element is one in which electrons are filling d-orbitals and the highest energy sub-shell is a d-subshell. A transition element is a d-block element which forms at least one ion with an incomplete d-sub-shell. ...
... A d-block element is one in which electrons are filling d-orbitals and the highest energy sub-shell is a d-subshell. A transition element is a d-block element which forms at least one ion with an incomplete d-sub-shell. ...
Chemistry - Set as Home Page
... Chlorine is _________ electronegative than bromine and iodine but _________ electronegative than fluorine. ...
... Chlorine is _________ electronegative than bromine and iodine but _________ electronegative than fluorine. ...
Chemistry 30 - SharpSchool
... an acid/base reaction is a chemical reaction in which _____________ is transferred from an _________ to a ___________ forming a ________________________ and a _______________________ ...
... an acid/base reaction is a chemical reaction in which _____________ is transferred from an _________ to a ___________ forming a ________________________ and a _______________________ ...
Acidic Environment by Ahmad Shah Idil
... For a closed-system composed completely of gases, if the TOTAL pressure on the system is: INCREASED, the equilibrium will favour the side that reduces pressure, that is, has less moles; thus opposing the change. One way pressure is increased is by reducing the volume. DECREASED, the equilibrium ...
... For a closed-system composed completely of gases, if the TOTAL pressure on the system is: INCREASED, the equilibrium will favour the side that reduces pressure, that is, has less moles; thus opposing the change. One way pressure is increased is by reducing the volume. DECREASED, the equilibrium ...
Chem12 Buffer/Titration : Probs
... 63) If you were given two unknown acids of equal concentration, briefly describe how you would identify the stronger acid. What testing material or instrument would you use, and how would you interpret the results ? ...
... 63) If you were given two unknown acids of equal concentration, briefly describe how you would identify the stronger acid. What testing material or instrument would you use, and how would you interpret the results ? ...
Chapter 19.1 Balancing Redox Equations
... The pre-exponential factor, A, in the Arrhenius equation, k = A e-(Ea/RT), can be broken down into the: a) collision frequency z and the fraction of collisions of sufficient energy f. b) steric factor p and the fraction of collisions of sufficient energy f. c) collision frequency z and the steric fa ...
... The pre-exponential factor, A, in the Arrhenius equation, k = A e-(Ea/RT), can be broken down into the: a) collision frequency z and the fraction of collisions of sufficient energy f. b) steric factor p and the fraction of collisions of sufficient energy f. c) collision frequency z and the steric fa ...
Topic 8 Acids and Bases File
... Conjugate: The species remaining after an acid has lost a proton (conjugate base) or a base has gained one (conjugate acid). pKa + pKb = pKw Diprotic: Where one mole of an acid produces two moles of hydrogen ions, e.g. H2SO4. End point: The point at which the indicator changes colour most rapidly. E ...
... Conjugate: The species remaining after an acid has lost a proton (conjugate base) or a base has gained one (conjugate acid). pKa + pKb = pKw Diprotic: Where one mole of an acid produces two moles of hydrogen ions, e.g. H2SO4. End point: The point at which the indicator changes colour most rapidly. E ...
Exam - Vcaa
... Ru2+(aq) + Fe2+(aq) no observed reaction Ru2+(aq) + Ni(s) Ru(s) + Ni2+(aq) Ru2+(aq) + Ag(s) no observed reaction Ru2+(aq) + Cu(s) Ru(s) + Cu2+(aq) Where would the following reaction be placed in the electrochemical series if the above tests were carried out under standard conditions? Ru2+(aq ...
... Ru2+(aq) + Fe2+(aq) no observed reaction Ru2+(aq) + Ni(s) Ru(s) + Ni2+(aq) Ru2+(aq) + Ag(s) no observed reaction Ru2+(aq) + Cu(s) Ru(s) + Cu2+(aq) Where would the following reaction be placed in the electrochemical series if the above tests were carried out under standard conditions? Ru2+(aq ...
8.4 Weak Acids and Bases, Continued
... • The Brønsted–Lowry definitions of acids and bases imply that a proton is transferred in an acidic or basic solution. • Water can act as an acid or base by donating or accepting a proton. For example, when a hydrochloric acid solution is prepared, water accepts a proton, and is acting as a base. ...
... • The Brønsted–Lowry definitions of acids and bases imply that a proton is transferred in an acidic or basic solution. • Water can act as an acid or base by donating or accepting a proton. For example, when a hydrochloric acid solution is prepared, water accepts a proton, and is acting as a base. ...
Mole
... relationships between the amounts of reactants used and products formed by a chemical reactions; it is based on the law of conservation of mass. ...
... relationships between the amounts of reactants used and products formed by a chemical reactions; it is based on the law of conservation of mass. ...
General Chemistry Discretes Test
... that determines atomic radius: how strongly the outermost electron shell is attracted to the nucleus. Electrons are attracted to the nucleus by its positive charge. There are two factors that affect the strength of that attraction: more protons for a stronger pull by the nucleus, which reduces the a ...
... that determines atomic radius: how strongly the outermost electron shell is attracted to the nucleus. Electrons are attracted to the nucleus by its positive charge. There are two factors that affect the strength of that attraction: more protons for a stronger pull by the nucleus, which reduces the a ...
Experiment 22
... reaction to shift to the right by increasing the concentration of a reactant. An increase in concentration of a product will force a shift to the left. By a similar argument we find that a decrease in reactant concentration causes a shift to the left; a decrease in product concentration produces a s ...
... reaction to shift to the right by increasing the concentration of a reactant. An increase in concentration of a product will force a shift to the left. By a similar argument we find that a decrease in reactant concentration causes a shift to the left; a decrease in product concentration produces a s ...
Introduction - Bulgarian Chemical Communications
... reaction to a reference one and their values are not confined in the limits from zero to unity. The means of calibrating ρ in terms of a Leffler equation have been discussed by A. Williams [7]. Seventy years after its conception as a quantitative description of polar effects, the Hammett equation an ...
... reaction to a reference one and their values are not confined in the limits from zero to unity. The means of calibrating ρ in terms of a Leffler equation have been discussed by A. Williams [7]. Seventy years after its conception as a quantitative description of polar effects, the Hammett equation an ...
Question Bank Topic 5
... 20.1: The nature of oxidation and reduction processes 20.2: Oxidizing agent and reducing agent 20.3: Oxidation and reduction in terms of electron transfer 20.5: Ionic half-equations 20.6: The reducing power of metals 20.8: The oxidizing power of non-metals 20.9: Chemical changes of common oxidizing ...
... 20.1: The nature of oxidation and reduction processes 20.2: Oxidizing agent and reducing agent 20.3: Oxidation and reduction in terms of electron transfer 20.5: Ionic half-equations 20.6: The reducing power of metals 20.8: The oxidizing power of non-metals 20.9: Chemical changes of common oxidizing ...
Ch. 11-12 Supplements
... 3) a. Write the balanced equation for the reaction of aqueous sulfuric acid, H2SO4, and solid aluminum hydroxide, Al(OH)3 forming liquid water and aqueous aluminum sulfate, Al2(SO4)3. If 30.0 grams of sulfuric acid and 25.0 grams of aluminum hydroxide react… b. How many grams of each product will b ...
... 3) a. Write the balanced equation for the reaction of aqueous sulfuric acid, H2SO4, and solid aluminum hydroxide, Al(OH)3 forming liquid water and aqueous aluminum sulfate, Al2(SO4)3. If 30.0 grams of sulfuric acid and 25.0 grams of aluminum hydroxide react… b. How many grams of each product will b ...
The Chemistry of Solutions Page | 1 Unit 7: The Chemistry of
... Double replacement reactions that involve aqueous solutions only take place of a solid or precipitate are formed. They can be represented in the three different ways. 1. Molecular equation - ...
... Double replacement reactions that involve aqueous solutions only take place of a solid or precipitate are formed. They can be represented in the three different ways. 1. Molecular equation - ...
Unfamiliar Oxidation States and Tkeir Stabilization
... studies. In some instances a combination of two or more of these has been necessary for the complete characterization of the oxidation state in question. Analytical data, in conjunction with a study of the chemical properties of the substance, frequently give sufficient information for the determina ...
... studies. In some instances a combination of two or more of these has been necessary for the complete characterization of the oxidation state in question. Analytical data, in conjunction with a study of the chemical properties of the substance, frequently give sufficient information for the determina ...
UILChemistryProblemsPart2
... The reaction quotient (Q) is also equal to the value of the mass action expression. At equilibrium Q = Kc. If Q > Kc then reaction is on the right side of equation moving toward the left. If Q< Kc reaction is on the left moving toward the right. When a reaction starts with only reactants (no product ...
... The reaction quotient (Q) is also equal to the value of the mass action expression. At equilibrium Q = Kc. If Q > Kc then reaction is on the right side of equation moving toward the left. If Q< Kc reaction is on the left moving toward the right. When a reaction starts with only reactants (no product ...
Hydroxide
Hydroxide is a diatomic anion with chemical formula OH−. It consists of an oxygen and hydrogen atom held together by a covalent bond, and carries a negative electric charge. It is an important but usually minor constituent of water. It functions as a base, a ligand, a nucleophile and a catalyst. The hydroxide ion forms salts, some of which dissociate in aqueous solution, liberating solvated hydroxide ions. Sodium hydroxide is a multi-million-ton per annum commodity chemical. A hydroxide attached to a strongly electropositive center may itself ionize, liberating a hydrogen cation (H+), making the parent compound an acid.The corresponding electrically neutral compound •HO is the hydroxyl radical. The corresponding covalently-bound group -OH of atoms is the hydroxyl group.Hydroxide ion and hydroxyl group are nucleophiles and can act as a catalyst in organic chemistry.Many inorganic substances which bear the word ""hydroxide"" in their names are not ionic compounds of the hydroxide ion, but covalent compounds which contain hydroxyl groups.