Pb2+ +2I- → PbI2 (s)
... 1st IE = 400, 2nd IE = 800, 3rd IE = 4000, 4th IE = 4500 – what element could this be? Jump in energy is at 2nd electron, it could be Mg, Be, Ca, Sr, or Br ...
... 1st IE = 400, 2nd IE = 800, 3rd IE = 4000, 4th IE = 4500 – what element could this be? Jump in energy is at 2nd electron, it could be Mg, Be, Ca, Sr, or Br ...
Lecture 4
... a. The oxidation number of oxygen is usually –2 in both ionic and molecular compounds. The major exception is in compounds called peroxides, which contain O22- ion, giving each oxygen an oxidation number of –1. b. The Oxidation number of hydrogen is +1 when bonded to nonmetals and –1 when bonded to ...
... a. The oxidation number of oxygen is usually –2 in both ionic and molecular compounds. The major exception is in compounds called peroxides, which contain O22- ion, giving each oxygen an oxidation number of –1. b. The Oxidation number of hydrogen is +1 when bonded to nonmetals and –1 when bonded to ...
Time
... - use activation energy diagrams and kinetic energy diagrams to show effect of temperature and catalysts on reaction rate - explain reaction rates in terms of the collision theory - effect of changes in temperature, concentrations, nature of the reactants, etc. - identify reaction mechanisms: cataly ...
... - use activation energy diagrams and kinetic energy diagrams to show effect of temperature and catalysts on reaction rate - explain reaction rates in terms of the collision theory - effect of changes in temperature, concentrations, nature of the reactants, etc. - identify reaction mechanisms: cataly ...
Language of chemistry
... All matter in the universe exists in any of four different states. They are: 1. Solid state 2. Liquid state 3. Gaseous state 4. Plasma state ...
... All matter in the universe exists in any of four different states. They are: 1. Solid state 2. Liquid state 3. Gaseous state 4. Plasma state ...
Final Exam - Dawson College
... Limestone, CaCO3, reacts with hydrochloric acid to form calcium chloride, water and carbon dioxide according to the following reaction: CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g) How many liters of CO2 gas will be formed at 755 torr and 33.0°C by the reaction of 2.35 g of limestone with an ex ...
... Limestone, CaCO3, reacts with hydrochloric acid to form calcium chloride, water and carbon dioxide according to the following reaction: CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g) How many liters of CO2 gas will be formed at 755 torr and 33.0°C by the reaction of 2.35 g of limestone with an ex ...
HIGHER TIER CHEMISTRY MINI-MOCK UNIT 2
... Calcium carbonate reacts with dilute hydrochloric acid as shown in the equation below. CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g) The rate at which this reaction takes place can be studied by measuring the amount of carbon dioxide gas produced. The graph below shows the results of four experi ...
... Calcium carbonate reacts with dilute hydrochloric acid as shown in the equation below. CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g) The rate at which this reaction takes place can be studied by measuring the amount of carbon dioxide gas produced. The graph below shows the results of four experi ...
Covalent bonding
... Chemical bond formed by sharing a pair of eEach atom gains an octet of e- by sharing electron pairs, e.g. ...
... Chemical bond formed by sharing a pair of eEach atom gains an octet of e- by sharing electron pairs, e.g. ...
Scientific Principles: Chemical Properties
... Covalent Compounds • Are also known as molecular compounds • Occur between the non-metal elements • Share the electrons from each atom • Are molecules ...
... Covalent Compounds • Are also known as molecular compounds • Occur between the non-metal elements • Share the electrons from each atom • Are molecules ...
Chapter8 - Louisiana Tech University
... Order: Clearly the order of the reaction has a major effect on its rate. The order of a reaction is found experimentally, and, for most basic reactions, is an integer value. A catalyst: The presence of a catalyst increases the reaction rate in both the forward and reverse reactions by lowering the a ...
... Order: Clearly the order of the reaction has a major effect on its rate. The order of a reaction is found experimentally, and, for most basic reactions, is an integer value. A catalyst: The presence of a catalyst increases the reaction rate in both the forward and reverse reactions by lowering the a ...
Chem 1 Worksheets WSHEET 1: Working with Numbers Practice
... 10. What is the density of carbon dioxide gas at -25.2C and 98.0 kPa? A. 0.232 g/L B. 0.279 g/L C. 0.994 g/L D. 1.74 g/L E. 2.09 g/L 11. A 250.0-mL sample of ammonia, NH3(g), exerts a pressure of 833 torr at 42.4C. What mass of ammonia is in the container? A. 0.0787 g B. 0.180 g C. 8.04 g D. 17.0 ...
... 10. What is the density of carbon dioxide gas at -25.2C and 98.0 kPa? A. 0.232 g/L B. 0.279 g/L C. 0.994 g/L D. 1.74 g/L E. 2.09 g/L 11. A 250.0-mL sample of ammonia, NH3(g), exerts a pressure of 833 torr at 42.4C. What mass of ammonia is in the container? A. 0.0787 g B. 0.180 g C. 8.04 g D. 17.0 ...
File
... A) Al2O3 B) BeO C) Na2O D) K2O2 2. What is the chemical formula of iron (III) sulfate? A) FeSO4 B) FeSO3 C) Fe(SO4)3 D) Fe2(SO4)3 3 - 4. An experiment is done to determine the density of copper. A sample of copper is weighed, and has a mass of 36.10 grams. The sample is added to a graduated cylinder ...
... A) Al2O3 B) BeO C) Na2O D) K2O2 2. What is the chemical formula of iron (III) sulfate? A) FeSO4 B) FeSO3 C) Fe(SO4)3 D) Fe2(SO4)3 3 - 4. An experiment is done to determine the density of copper. A sample of copper is weighed, and has a mass of 36.10 grams. The sample is added to a graduated cylinder ...
Electrochemistry
... How to draw a Galvanic Cell The oxidation reaction occurs at the anode. The reduction reaction occurs at the cathode. You will be give the unbalanced net ionic reaction or a list of the substances present (line notation). From the information given you need to decide what half reactions occur in ea ...
... How to draw a Galvanic Cell The oxidation reaction occurs at the anode. The reduction reaction occurs at the cathode. You will be give the unbalanced net ionic reaction or a list of the substances present (line notation). From the information given you need to decide what half reactions occur in ea ...
Oxidation-Reduction (REDOX) Reactions
... If we combine these and cancel the electrons (because we have the same number on both sides), we get the balanced net ionic equation: 2 Al0 (s) + 3 Zn2+ (aq) → 2 Al3+ (aq) + 3 Zn0 (s) ...
... If we combine these and cancel the electrons (because we have the same number on both sides), we get the balanced net ionic equation: 2 Al0 (s) + 3 Zn2+ (aq) → 2 Al3+ (aq) + 3 Zn0 (s) ...
CHEM 30 REDOX
... Oxidation is a process in which e- are lost A reducing agent donates e- and is oxidized. A oxidizing agent gains e- and is reduced. ...
... Oxidation is a process in which e- are lost A reducing agent donates e- and is oxidized. A oxidizing agent gains e- and is reduced. ...
3. Chemical changes and Structure Unit Questions
... 24. A student writes the following two statements. Both are incorrect. In each case explain the mistake in the student’s reasoning. (a) All ionic compounds are solids at room temperature. Many covalent compounds are gases at room temperature. This proves that ionic bonds are stronger than covalent ...
... 24. A student writes the following two statements. Both are incorrect. In each case explain the mistake in the student’s reasoning. (a) All ionic compounds are solids at room temperature. Many covalent compounds are gases at room temperature. This proves that ionic bonds are stronger than covalent ...
Reaction of potassium atoms with oriented bromotrifluoromethane
... The CH31reactions are found to be qualitatively consistent with ‘chemical intuition”: the alkali atom is most likely to react when the “heads” orientation (the I end) is approached, and for Rb + CH31, there is a sizable cone of no reaction* when the R b approaches the “tails” end of the molecule. Th ...
... The CH31reactions are found to be qualitatively consistent with ‘chemical intuition”: the alkali atom is most likely to react when the “heads” orientation (the I end) is approached, and for Rb + CH31, there is a sizable cone of no reaction* when the R b approaches the “tails” end of the molecule. Th ...
FINAL EXAM Spring 2012
... [Gas constant = 8.314 J/mol K; 0.08206 L*atm/mole*K,1 faraday = 96500 J/V mol e-; at 25oC] 1) The reaction has the rate law, Rate = k[A][B]2. Which will cause the rate to increase the most? A) doubling [A] B) doubling [B] C) tripling [B] D) quadrupling [A] E) doubling both [A] and [B] 2) At a given ...
... [Gas constant = 8.314 J/mol K; 0.08206 L*atm/mole*K,1 faraday = 96500 J/V mol e-; at 25oC] 1) The reaction has the rate law, Rate = k[A][B]2. Which will cause the rate to increase the most? A) doubling [A] B) doubling [B] C) tripling [B] D) quadrupling [A] E) doubling both [A] and [B] 2) At a given ...
Chem Review
... Linus Pauling was an American Chemist who developed the concept that electronegativities can help to determine the iconicity of a bond (that is how ionic a bond is). Pauling’s scale is what we use to determine whether a bong is ionic or covalent or polar or non polar. The way the Pauling scale is us ...
... Linus Pauling was an American Chemist who developed the concept that electronegativities can help to determine the iconicity of a bond (that is how ionic a bond is). Pauling’s scale is what we use to determine whether a bong is ionic or covalent or polar or non polar. The way the Pauling scale is us ...
CH2 Student Revision Guides pdf
... Van der Waals forces are the weak intermolecular forces that exist between all atoms and molecules and include induced-dipole - induced-dipole interactions and dipole-dipole interactions. . The electrons within an atom or molecule are in motion and at a given instant they may be so displaced that th ...
... Van der Waals forces are the weak intermolecular forces that exist between all atoms and molecules and include induced-dipole - induced-dipole interactions and dipole-dipole interactions. . The electrons within an atom or molecule are in motion and at a given instant they may be so displaced that th ...
program
... make a connection between bond types, lattice type, and the properties of a substance: • melting point and boiling point; • hardness and brittleness; • absence or presence of electrical conductivity in the solid, liquid, and/or dissolved ...
... make a connection between bond types, lattice type, and the properties of a substance: • melting point and boiling point; • hardness and brittleness; • absence or presence of electrical conductivity in the solid, liquid, and/or dissolved ...
Qualitative Analysis Lab
... have to add just enough drops to effect a change, making sure that you mix the solution well after each addition. You can use the tip of a clean glass rod to mix the drops in each well. Each identification test will be performed on all seven of the compounds so that you can observe and record the re ...
... have to add just enough drops to effect a change, making sure that you mix the solution well after each addition. You can use the tip of a clean glass rod to mix the drops in each well. Each identification test will be performed on all seven of the compounds so that you can observe and record the re ...
Chemistry
... describe, interpret and/or predict the effect of different types of bonding (ionic bonding; covalent bonding; hydrogen bonding; other intermolecular interactions; metallic bonding) on the physical properties of substances ...
... describe, interpret and/or predict the effect of different types of bonding (ionic bonding; covalent bonding; hydrogen bonding; other intermolecular interactions; metallic bonding) on the physical properties of substances ...