Equivalent weight
... The equivalent mass of any species is not simply a property of the species, but depends upon the reaction in which it participates, i.e., one chemical species can have more than one value for its equivalent mass depending upon the reaction it participates. The equivalent mass of a substance is the q ...
... The equivalent mass of any species is not simply a property of the species, but depends upon the reaction in which it participates, i.e., one chemical species can have more than one value for its equivalent mass depending upon the reaction it participates. The equivalent mass of a substance is the q ...
Study Questions
... solution has a density of 1.00 g/cm3, calculate the concentration of MgCl2 in a saturated solution in moles/liter and then calculate Ksp for MgCl2. 7. The Ksp for CuCrO4 is 3.6 x 10-6. What is the molarity of a saturated solution of CuCrO4? 8. Silver nitrate (AgNO3) is added to a solution of 0.020 M ...
... solution has a density of 1.00 g/cm3, calculate the concentration of MgCl2 in a saturated solution in moles/liter and then calculate Ksp for MgCl2. 7. The Ksp for CuCrO4 is 3.6 x 10-6. What is the molarity of a saturated solution of CuCrO4? 8. Silver nitrate (AgNO3) is added to a solution of 0.020 M ...
Solution Stoichiometry - Angelo State University
... Acids and Bases • The concept of acidity and basicity has existed for a long time, and some compounds have long been designated as acids or bases: – Acids turn blue litmus red; their aqueous solutions have a tart taste. – Bases turn red litmus blue; their aqueous solutions have a bitter taste and a ...
... Acids and Bases • The concept of acidity and basicity has existed for a long time, and some compounds have long been designated as acids or bases: – Acids turn blue litmus red; their aqueous solutions have a tart taste. – Bases turn red litmus blue; their aqueous solutions have a bitter taste and a ...
How to Make a Collage
... For questions 13 - 16, use the following key: (each answer may be used once, more than once, or not at all.) a) ...
... For questions 13 - 16, use the following key: (each answer may be used once, more than once, or not at all.) a) ...
Document
... 1. Explain what is wrong with the statement “My friend burned a piece of paper (a hydrocarbon) that had the final exam on it and it disappeared”. (Be sure to use a chemical equation, identify reactants and product(s) and include energy). ANSWER: The paper (CxHy) was burned with oxygen and the atoms ...
... 1. Explain what is wrong with the statement “My friend burned a piece of paper (a hydrocarbon) that had the final exam on it and it disappeared”. (Be sure to use a chemical equation, identify reactants and product(s) and include energy). ANSWER: The paper (CxHy) was burned with oxygen and the atoms ...
Atomic combinations: Electronegativity and ionic
... Another example of ionic bonding takes place between magnesium (Mg) and oxygen (O) to form magnesium oxide (MgO). Magnesium has two valence electrons and an electronegativity of 1.2, while oxygen has six valence electrons and an electronegativity of 3.5. Since oxygen has a higher electronegativity, ...
... Another example of ionic bonding takes place between magnesium (Mg) and oxygen (O) to form magnesium oxide (MgO). Magnesium has two valence electrons and an electronegativity of 1.2, while oxygen has six valence electrons and an electronegativity of 3.5. Since oxygen has a higher electronegativity, ...
File
... Metals are elements that have luster, conduct heat and electricity, usually bend without breaking (malleable) and are ductile. Most have extremely high melting points. Reactivity increases as you go down within a group for metals. With metals the greater the tendency to lose electrons, the more reac ...
... Metals are elements that have luster, conduct heat and electricity, usually bend without breaking (malleable) and are ductile. Most have extremely high melting points. Reactivity increases as you go down within a group for metals. With metals the greater the tendency to lose electrons, the more reac ...
Matter- Types and Changes
... each other. These are referred to as diatomic or polyatomic molecules. H2, O2, N2, F2, Cl2, Br2, I2 C60, S8, P4 • The 2 in O2 is termed a subscript and refers to the element immediately in front of it. ...
... each other. These are referred to as diatomic or polyatomic molecules. H2, O2, N2, F2, Cl2, Br2, I2 C60, S8, P4 • The 2 in O2 is termed a subscript and refers to the element immediately in front of it. ...
with answers
... (g) In a Blast Furnace, partial oxidation of coke results in formation of the reducing agent CO. This is also involved in the Boudouard equilibrium, by which finely-divided carbon is formed which dissolves in the liquid iron. Give the reaction equation for the Boudouard equilibrium. CO2 + C 2 CO Wha ...
... (g) In a Blast Furnace, partial oxidation of coke results in formation of the reducing agent CO. This is also involved in the Boudouard equilibrium, by which finely-divided carbon is formed which dissolves in the liquid iron. Give the reaction equation for the Boudouard equilibrium. CO2 + C 2 CO Wha ...
Writing Net Ionic Equations
... that the parentheses that appear in a molecular formula are not used when representing the ionic form in solution. For example, dissociated cadmium nitrate contains no parentheses. Note: The only common substances that should be written as ions in ionic equations are soluble salts, strong acids and ...
... that the parentheses that appear in a molecular formula are not used when representing the ionic form in solution. For example, dissociated cadmium nitrate contains no parentheses. Note: The only common substances that should be written as ions in ionic equations are soluble salts, strong acids and ...
Document
... no atoms are created or destroyed during the reaction, (but are moved around like pieces of Lego). ...
... no atoms are created or destroyed during the reaction, (but are moved around like pieces of Lego). ...
Chapter 7: Chemical Formulas and Chemical Compounds
... In HF, the bond is polar with a partial negative charge on the fluorine and a partial positive charge on the hydrogen. If HF were an ionic compound in which an electron was fully transferred to the fluorine ion, H would have a 1+ charge and F would have a 1- charge. Thus the oxidation numbers of H a ...
... In HF, the bond is polar with a partial negative charge on the fluorine and a partial positive charge on the hydrogen. If HF were an ionic compound in which an electron was fully transferred to the fluorine ion, H would have a 1+ charge and F would have a 1- charge. Thus the oxidation numbers of H a ...
Word - chemmybear.com
... Translate: which substance can be reduced but cannot be oxidized… look for Cl in its highest ox. state. Cl is in family (7A or 17) with 7 valence electrons. Cl’s highest oxidation state is +7, as in ClO4. (B) +4 Set this up as an algebra problem: Na2Ti3O7 2(+1) + 3(x) + 7(-2) = 0 x = +4 (C) 1.84 V ...
... Translate: which substance can be reduced but cannot be oxidized… look for Cl in its highest ox. state. Cl is in family (7A or 17) with 7 valence electrons. Cl’s highest oxidation state is +7, as in ClO4. (B) +4 Set this up as an algebra problem: Na2Ti3O7 2(+1) + 3(x) + 7(-2) = 0 x = +4 (C) 1.84 V ...
Chapter 9 Notes - Get a Clue with Mrs. Perdue
... Re-used__ again for the same reaction with other molecules Very little enzyme needed to help in many reactions ...
... Re-used__ again for the same reaction with other molecules Very little enzyme needed to help in many reactions ...
Electricity
... In-between conductors and insulators in their ability to conduct electricity Conductivity can be greatly enhanced by adding small amounts of other elements Requires quantum physics to truly understand ...
... In-between conductors and insulators in their ability to conduct electricity Conductivity can be greatly enhanced by adding small amounts of other elements Requires quantum physics to truly understand ...
- Catalyst
... B) 1.6 x 1044 mol C) 1.8 x 10-3 mol D) 8.8 x 10-4 mol E) none of the above 14. What is the mass % of H in ammonium phosphate ((NH4)3PO3? A) 2.3% B) 6.0% C) 9.1% D) 17% E) none of the above 15. Naturally occurring rubidium has an atomic mass of 85.5amu. It is composed of two isotopes, rubidium–85 (84 ...
... B) 1.6 x 1044 mol C) 1.8 x 10-3 mol D) 8.8 x 10-4 mol E) none of the above 14. What is the mass % of H in ammonium phosphate ((NH4)3PO3? A) 2.3% B) 6.0% C) 9.1% D) 17% E) none of the above 15. Naturally occurring rubidium has an atomic mass of 85.5amu. It is composed of two isotopes, rubidium–85 (84 ...
Syllabus of the International Chemistry Olympiad
... by-product of Dutch cheese making, how whales manage to stay under water for a considerable length of time, how the color of Delft blue pottery can be understood, how a bio-compatible polymer can be made from lactic acid, how modern spectroscopy is applied, how the structure of the natural product c ...
... by-product of Dutch cheese making, how whales manage to stay under water for a considerable length of time, how the color of Delft blue pottery can be understood, how a bio-compatible polymer can be made from lactic acid, how modern spectroscopy is applied, how the structure of the natural product c ...
chapter 9: aqueous solutions
... 2. write the formula of the compound followed by an arrow 3. balance using coefficients 4. add state symbols (state of pure substance on the left, ((s) usually), (aq) for ions on the right) Example 1: Solid Sodium carbonate dissolves in water ...
... 2. write the formula of the compound followed by an arrow 3. balance using coefficients 4. add state symbols (state of pure substance on the left, ((s) usually), (aq) for ions on the right) Example 1: Solid Sodium carbonate dissolves in water ...
RedOx notes:
... must have the charge that makes everything else sum to zero. If you don’t choose first you might not get your first choice (you can’t always get what you wanted, but if you try real hard you (might just get) what you (“We, the compound”) need) ...
... must have the charge that makes everything else sum to zero. If you don’t choose first you might not get your first choice (you can’t always get what you wanted, but if you try real hard you (might just get) what you (“We, the compound”) need) ...
Knox Chem Prelim 2009
... with dilute acid. Choose a metal which reacts more slowly than magnesium, but more rapidly than lead to answer the following questions. (a) Describe your procedure and the observations you made. ...
... with dilute acid. Choose a metal which reacts more slowly than magnesium, but more rapidly than lead to answer the following questions. (a) Describe your procedure and the observations you made. ...
Electrochemistry
Electrochemistry is the branch of physical chemistry that studies chemical reactions which take place at the interface of an electrode, usually a solid metal or a semiconductor, and an ionic conductor, the electrolyte. These reactions involve electric charges moving between the electrodes and the electrolyte (or ionic species in a solution). Thus electrochemistry deals with the interaction between electrical energy and chemical change.When a chemical reaction is caused by an externally supplied current, as in electrolysis, or if an electric current is produced by a spontaneous chemical reaction as in a battery, it is called an electrochemical reaction. Chemical reactions where electrons are transferred directly between molecules and/or atoms are called oxidation-reduction or (redox) reactions. In general, electrochemistry describes the overall reactions when individual redox reactions are separate but connected by an external electric circuit and an intervening electrolyte.