pH and pOH (cont.)
... • The ion product constant for water, Kw, equals the product of the H+ ion concentration and the OH– ion concentration. Kw = [H+][OH–] • The pH of a solution is the negative log of the hydrogen ion concentration. The pOH is the negative log of the hydroxide ion concentration. pH plus pOH equals 14. ...
... • The ion product constant for water, Kw, equals the product of the H+ ion concentration and the OH– ion concentration. Kw = [H+][OH–] • The pH of a solution is the negative log of the hydrogen ion concentration. The pOH is the negative log of the hydroxide ion concentration. pH plus pOH equals 14. ...
Scientific Notation, Measurements, and
... o Gas – no fixed volume or shape, takes on shape of the container, highly compressible o Plasma – exists at extremely high temperatures as ions since electrons are striped away from the nucleus A mixture is two or more substances, combined in varying proportions - each retaining its own specific pro ...
... o Gas – no fixed volume or shape, takes on shape of the container, highly compressible o Plasma – exists at extremely high temperatures as ions since electrons are striped away from the nucleus A mixture is two or more substances, combined in varying proportions - each retaining its own specific pro ...
Chemistry I
... Cl + e → Cl Negative ions = anions. anions. Cations derived from metal name (sodium (cat)ion (cat)ion,, silver (cat)ion (cat)ion)) or have the suffix –ium (NH4+ = ammonium ion) Anions from nonnon-metal atoms have the suffix –ide (chloride) in compounds with oxygen –ate (SO42-=sulfate) or –ite (SO32- ...
... Cl + e → Cl Negative ions = anions. anions. Cations derived from metal name (sodium (cat)ion (cat)ion,, silver (cat)ion (cat)ion)) or have the suffix –ium (NH4+ = ammonium ion) Anions from nonnon-metal atoms have the suffix –ide (chloride) in compounds with oxygen –ate (SO42-=sulfate) or –ite (SO32- ...
Chemical Equilibrium – Le Chatelier`s Principle
... What is the color of methyl violet in water ? What reagent causes a color change? What reagent causes a shift back to the original color? In terms of equilibrium of reaction (2), explain why the reagents for Steps 2 and 3 worked. Part B. Solubility Equilibrium; Finding a Value for Ksp Calculate the ...
... What is the color of methyl violet in water ? What reagent causes a color change? What reagent causes a shift back to the original color? In terms of equilibrium of reaction (2), explain why the reagents for Steps 2 and 3 worked. Part B. Solubility Equilibrium; Finding a Value for Ksp Calculate the ...
Types of Aqueous Reactions
... This is an “electrochemical” reaction Fe2+ Fe3+ + 1 eIt’s a special kind of process, part electrical and part (barely) chemical. The atom changes oxidation state and creates an electron. The electron can do useful work (power your Ipod) or chemical work (change the oxidation state of something el ...
... This is an “electrochemical” reaction Fe2+ Fe3+ + 1 eIt’s a special kind of process, part electrical and part (barely) chemical. The atom changes oxidation state and creates an electron. The electron can do useful work (power your Ipod) or chemical work (change the oxidation state of something el ...
chemistry SLO content practice
... a) atomic mass b) mass number c) atomic number d) isotope 9. _____ What is the average mass of atoms of a given element? a)atomic mass b)mass number c)atomic number d)isotope 10. _____ What is the mass of one atom of a given element? a) atomic mass b) mass number c) atomic number d) isotope 11. ____ ...
... a) atomic mass b) mass number c) atomic number d) isotope 9. _____ What is the average mass of atoms of a given element? a)atomic mass b)mass number c)atomic number d)isotope 10. _____ What is the mass of one atom of a given element? a) atomic mass b) mass number c) atomic number d) isotope 11. ____ ...
marking scheme
... involves nucleus of atoms not electron cloud (electrons) / involves break-up of nucleus / no breaking (forming) of chemical bonds (or named chemical bonds, or molecules) / chemical involves electrons only // involves new elements being generated (made, formed, produced) / transmutation // involves l ...
... involves nucleus of atoms not electron cloud (electrons) / involves break-up of nucleus / no breaking (forming) of chemical bonds (or named chemical bonds, or molecules) / chemical involves electrons only // involves new elements being generated (made, formed, produced) / transmutation // involves l ...
WJEC CBAC AS/A LEVEL GCE in Chemistry REVISION AID UNIT 1
... The first graph shows that as the nuclear charge increases, the molar first ionisation energy does not increase uniformly. The second graph seems to indicate that the electrons in an atom exist in distinct energy levels. For sodium, shown above, there is one electron on its own which is the easiest ...
... The first graph shows that as the nuclear charge increases, the molar first ionisation energy does not increase uniformly. The second graph seems to indicate that the electrons in an atom exist in distinct energy levels. For sodium, shown above, there is one electron on its own which is the easiest ...
physical setting chemistry
... powdered drinks is that they bubble and fizz when placed in water, forming an instant carbonated beverage. The fizz in Fizzies is caused by bubbles of carbon dioxide (CO2) gas that are released when the tablet is dropped into water. Careful observation reveals that these bubbles rise to the surface ...
... powdered drinks is that they bubble and fizz when placed in water, forming an instant carbonated beverage. The fizz in Fizzies is caused by bubbles of carbon dioxide (CO2) gas that are released when the tablet is dropped into water. Careful observation reveals that these bubbles rise to the surface ...
0.08206 L atm/K mol - Arizona State University
... Potential energy increases and kinetic energy increases. Potential energy increases and kinetic energy decreases. Potential energy decreases and kinetic energy increases. Potential energy decreases and kinetic energy decreases. There is no change at all. ...
... Potential energy increases and kinetic energy increases. Potential energy increases and kinetic energy decreases. Potential energy decreases and kinetic energy increases. Potential energy decreases and kinetic energy decreases. There is no change at all. ...
A Classification of AP Chemistry Reactions
... Dichromate is found in redox reactions. It is a very good oxidizing agent, and is always used in acidic solution, where it forms Cr3+: - A solution of potassium iodide is added to an acidified solution of potassium dichromate. H+ + Cr2O72- + I- Cr3+ + I2 + H2O Hydrogen Peroxide Hydrogen peroxide, ...
... Dichromate is found in redox reactions. It is a very good oxidizing agent, and is always used in acidic solution, where it forms Cr3+: - A solution of potassium iodide is added to an acidified solution of potassium dichromate. H+ + Cr2O72- + I- Cr3+ + I2 + H2O Hydrogen Peroxide Hydrogen peroxide, ...
Section 5
... When bases (“ligands”) interact with metal ions, a coordination complex results. This interaction is created by a neutral or anionic molecule (ligand) donating at least one electron pair to the Lewis acid metal ion ...
... When bases (“ligands”) interact with metal ions, a coordination complex results. This interaction is created by a neutral or anionic molecule (ligand) donating at least one electron pair to the Lewis acid metal ion ...
Exam Review 1: CHM 1411 Time: 0hr 55mins
... B) Dalton's Atomic Theory. C) the Scientific Method. D) the Law of Multiple Proportions. E) the Law of Definite Proportions. Answer: A 11) Precision refers to ________. A) how close a measured number is to other measured numbers B) how close a measured number is to the true value C) how close a meas ...
... B) Dalton's Atomic Theory. C) the Scientific Method. D) the Law of Multiple Proportions. E) the Law of Definite Proportions. Answer: A 11) Precision refers to ________. A) how close a measured number is to other measured numbers B) how close a measured number is to the true value C) how close a meas ...
Chapter 8 and 9 homework
... 24. The concentration of Cu2+ ions in the water (which also contains sulfate ions) discharged from a certain industrial plant is determined by adding excess sodium sulfide (Na2S) solution to 0.800 L of the water. The molecular equation is: Na2S(aq) + CuSO4(aq) →Na2SO4(aq) + CuS(s) Calculate the mola ...
... 24. The concentration of Cu2+ ions in the water (which also contains sulfate ions) discharged from a certain industrial plant is determined by adding excess sodium sulfide (Na2S) solution to 0.800 L of the water. The molecular equation is: Na2S(aq) + CuSO4(aq) →Na2SO4(aq) + CuS(s) Calculate the mola ...
CAMBRIDGE INTERNATIONAL EXAMINATIONS
... Write your name, Centre number and candidate number on the answer sheet in the spaces provided unless this has been done for you. There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C, and D. Choose the one you consider correct and r ...
... Write your name, Centre number and candidate number on the answer sheet in the spaces provided unless this has been done for you. There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C, and D. Choose the one you consider correct and r ...
High Energy Observational Astrophysics
... pairs generated in proportional gas detectors). If this happens in the depletion region, the strong internal field will rapidly separate the pairs before they recombine, electrons drifting towards the anode, and holes to the cathode, resulting in a net current across the diode. Integral of current e ...
... pairs generated in proportional gas detectors). If this happens in the depletion region, the strong internal field will rapidly separate the pairs before they recombine, electrons drifting towards the anode, and holes to the cathode, resulting in a net current across the diode. Integral of current e ...
Arenes - Science Skool!
... This phenoxide ion is relatively stable because of the overlaps of the pi orbitals on oxygen with the delocalised ring system. Alkoxide ion such as ethoxide (C2H5O-) on the overhand are very unstable because there is no such delocalisation. As well as reactions of the OH group the benzene ring can a ...
... This phenoxide ion is relatively stable because of the overlaps of the pi orbitals on oxygen with the delocalised ring system. Alkoxide ion such as ethoxide (C2H5O-) on the overhand are very unstable because there is no such delocalisation. As well as reactions of the OH group the benzene ring can a ...
The Atomic Theory Chem 111
... B - Definitions: 1) Atom is the smallest basic unit of an element that can enter into a chemical reaction. It is also the smallest unit that cannot be broken down into another chemical substance. 2) Electron is the negatively charged, subatomic particle with a very low mass. 3) Radioactivity is the ...
... B - Definitions: 1) Atom is the smallest basic unit of an element that can enter into a chemical reaction. It is also the smallest unit that cannot be broken down into another chemical substance. 2) Electron is the negatively charged, subatomic particle with a very low mass. 3) Radioactivity is the ...
PowerPoint
... Writing Balanced Equations for Neutralization Reactions Problem: Write balanced molecular and net ionic equations for the following chemical ...
... Writing Balanced Equations for Neutralization Reactions Problem: Write balanced molecular and net ionic equations for the following chemical ...
Chemistry Midterm Review Sheet
... Write balanced net ionic equations for the reactions that may occur when each of the following pairs is mixed. Identify any spectator ions in these reactions. If there is no reaction, write NR. a) AgNO3 (aq) and Na2CO3(aq) b) NaCl (aq) and (NH4)2SO4 (aq) c) KOH (aq) and HNO3 (aq) d) Pb(NO3)2 (aq) an ...
... Write balanced net ionic equations for the reactions that may occur when each of the following pairs is mixed. Identify any spectator ions in these reactions. If there is no reaction, write NR. a) AgNO3 (aq) and Na2CO3(aq) b) NaCl (aq) and (NH4)2SO4 (aq) c) KOH (aq) and HNO3 (aq) d) Pb(NO3)2 (aq) an ...
CH1 Student Revision Guides pdf
... The first graph shows that as the nuclear charge increases, the molar first ionisation energy does not increase uniformly. The second graph seems to indicate that the electrons in an atom exist in distinct energy levels. For sodium, shown above, there is one electron on its own which is the easiest ...
... The first graph shows that as the nuclear charge increases, the molar first ionisation energy does not increase uniformly. The second graph seems to indicate that the electrons in an atom exist in distinct energy levels. For sodium, shown above, there is one electron on its own which is the easiest ...
Chapter 9 Balancing Equations
... 2. Find the number of atoms for each element on the left side. Compare those against the number of the atoms of the same element on the right side. 3. Determine where to place coefficients in front of formulas so that the left side has the same number of atoms as the right side for EACH element. 4. ...
... 2. Find the number of atoms for each element on the left side. Compare those against the number of the atoms of the same element on the right side. 3. Determine where to place coefficients in front of formulas so that the left side has the same number of atoms as the right side for EACH element. 4. ...
Balance this equation:
... The diagram shows iron oxide, Fe2O3, and carbon monoxide, CO reacting to form iron and carbon dioxide. Which of the following is the correct full balanced chemical equation for the reaction depicted? ...
... The diagram shows iron oxide, Fe2O3, and carbon monoxide, CO reacting to form iron and carbon dioxide. Which of the following is the correct full balanced chemical equation for the reaction depicted? ...
Uranyl Ion Complexes with Ammoniobenzoates as
... 3). Atom U1 is chelated by a carboxylate group, while two other L3–/HL3 ligands are bridging the pairs of atoms U1, U2 and U3, U4. Two hydroxide ions (O11, O12) provide additional bridging. Curiously, instead of another chelating HL3 ligand, two water molecules complete the coordination sphere of U ...
... 3). Atom U1 is chelated by a carboxylate group, while two other L3–/HL3 ligands are bridging the pairs of atoms U1, U2 and U3, U4. Two hydroxide ions (O11, O12) provide additional bridging. Curiously, instead of another chelating HL3 ligand, two water molecules complete the coordination sphere of U ...