Review Packet - Daigneault Chem.is.try
... 8. A substance has a mass of 2.50g after one half-life has occurred. What was the original mass? 9. Isotopes of the same element have the _________________ number of protons and _______________ number of neutrons. Chapter 3: Elements, Atoms, and Ions; Atomic Theory 1. Compare the parts of an atom ba ...
... 8. A substance has a mass of 2.50g after one half-life has occurred. What was the original mass? 9. Isotopes of the same element have the _________________ number of protons and _______________ number of neutrons. Chapter 3: Elements, Atoms, and Ions; Atomic Theory 1. Compare the parts of an atom ba ...
LECTURE NOTES ON PHS 222 (THERMAL PHYSICS) BY DR. V.C.
... Where Pext = external pressure applied in order to perform work, which causes a change in volume dV. The negative sign implies compression (dV<0) when dw should be positive ...
... Where Pext = external pressure applied in order to perform work, which causes a change in volume dV. The negative sign implies compression (dV<0) when dw should be positive ...
Chemical Thermodynamics Survival Kit
... In our convention, if q is a positive number, it means the heat is being absorbed by the system (heat gain) and if it is a negative number, heat is being given out (heat loss). Also, in the same convention, if w is a positive number, the work is being done on the system (“work gain”), and if it is a ...
... In our convention, if q is a positive number, it means the heat is being absorbed by the system (heat gain) and if it is a negative number, heat is being given out (heat loss). Also, in the same convention, if w is a positive number, the work is being done on the system (“work gain”), and if it is a ...
Unit 4, Lesson #3 - Patterson Science
... eg. For the following reactions at the stated temperatures, what does the value of K indicate about the amount of product that will form? a) 2 H2(g) + O2(g) ↔ 2 H2O (g) Kc = 1.4 x 1083 at 298 K Kc >>> 1, so the reaction goes essentially to completion. The amount of product is much much greater than ...
... eg. For the following reactions at the stated temperatures, what does the value of K indicate about the amount of product that will form? a) 2 H2(g) + O2(g) ↔ 2 H2O (g) Kc = 1.4 x 1083 at 298 K Kc >>> 1, so the reaction goes essentially to completion. The amount of product is much much greater than ...
Study Guide
... 6. An iodine sample contains 2.91 × 1022 atoms of iodine. What is its mass in grams? [Use atomic weight: I, 126.9] 7. When a solid compound is described as a “hydrate”, what does this mean? 8. What is the difference in meaning between “2O” and “O2” when they occur in chemical equations? 9. 6.022 ×10 ...
... 6. An iodine sample contains 2.91 × 1022 atoms of iodine. What is its mass in grams? [Use atomic weight: I, 126.9] 7. When a solid compound is described as a “hydrate”, what does this mean? 8. What is the difference in meaning between “2O” and “O2” when they occur in chemical equations? 9. 6.022 ×10 ...
Chapter1 - WilsonChemWiki
... 1) Change in the concentrations (amounts) of reactants or products: According to La Chatelier’s principle; when a stress is applied to a reaction at equilibrium by changing the amount of reactants or products, then the rates of forward and reverse reactions will change to relieve that stress. 2) Cha ...
... 1) Change in the concentrations (amounts) of reactants or products: According to La Chatelier’s principle; when a stress is applied to a reaction at equilibrium by changing the amount of reactants or products, then the rates of forward and reverse reactions will change to relieve that stress. 2) Cha ...
Introduction to Statistical Thermodynamics - cryocourse 2011
... 3) History of Statistical Thermodynamics (http://en.wikipedia.org/wiki/Statistical_thermodynamics) In 1738, Swiss physicist and mathematician Daniel Bernoulli published Hydrodynamica which laid the basis for the kinetic theory of gases. In this work, Bernoulli positioned the argument, still used to ...
... 3) History of Statistical Thermodynamics (http://en.wikipedia.org/wiki/Statistical_thermodynamics) In 1738, Swiss physicist and mathematician Daniel Bernoulli published Hydrodynamica which laid the basis for the kinetic theory of gases. In this work, Bernoulli positioned the argument, still used to ...
SCH4C Exam Review Assignment Kathleen Fall 2014
... d) Ag(NO3) (aq) + NaOH (aq) e) Mg(NO3) 2 (aq) + Ca(NO3) (aq) f) Fe(NO3)3 (aq) + NaOH (aq) ...
... d) Ag(NO3) (aq) + NaOH (aq) e) Mg(NO3) 2 (aq) + Ca(NO3) (aq) f) Fe(NO3)3 (aq) + NaOH (aq) ...
CHM222A: Basic Physical Chemistry
... Carl Bosch : Nobel Prize 1931 (Commercialized the Haber process) Elucidation of the mechanism : Gerhard Ertl (Nobel Prize 2007) ...
... Carl Bosch : Nobel Prize 1931 (Commercialized the Haber process) Elucidation of the mechanism : Gerhard Ertl (Nobel Prize 2007) ...
Predicting Reactions • AP Chemistry CLASSIFYING REACTIONS
... “Free halogens + dilute OH- hypohalite ions," the halide ions (such as Cl-) as a product are required for full credit. [industrial process: making bleach] Cl2(g) + 2OH- ClO- + Cl- + H2O 3. When the oxides of an alkali metal (Family 1), Ca, Ba, or Sr dissolve in water, hydroxides form, but no gases w ...
... “Free halogens + dilute OH- hypohalite ions," the halide ions (such as Cl-) as a product are required for full credit. [industrial process: making bleach] Cl2(g) + 2OH- ClO- + Cl- + H2O 3. When the oxides of an alkali metal (Family 1), Ca, Ba, or Sr dissolve in water, hydroxides form, but no gases w ...
Chapter 6: Chemical Reactions – Study Guide
... Mastering Chemistry Study Area: http://www.pearsonmylabandmastering.com/northamerica/ Miss Marnik’s Website: http://www.northallegheny.org/Page/16665 Labs, problem packets, and homework assignments ...
... Mastering Chemistry Study Area: http://www.pearsonmylabandmastering.com/northamerica/ Miss Marnik’s Website: http://www.northallegheny.org/Page/16665 Labs, problem packets, and homework assignments ...
Thermodynamics
... -If G<0, the reaction is spontaneous (forward dir.) -If G>0, the reaction is not spontaneous (forward dir.) -If G=0,the reaction is at equilibrium -A reaction is spontaneous in the forward direction only if ΔG is negative. -Spontaneity is controlled by enthalpy and entropy. If ΔH (-) & ΔS (+),the ...
... -If G<0, the reaction is spontaneous (forward dir.) -If G>0, the reaction is not spontaneous (forward dir.) -If G=0,the reaction is at equilibrium -A reaction is spontaneous in the forward direction only if ΔG is negative. -Spontaneity is controlled by enthalpy and entropy. If ΔH (-) & ΔS (+),the ...
Lecture 22 - Chemistry Courses
... First, the approximation will be made that the activity of the species in solution are equivalent to the numerical values of concentration given in moles per liter (M). For a weak acid, the extent of proton transfer is so small that it is usually assumed that the molar concentration of HA is unchang ...
... First, the approximation will be made that the activity of the species in solution are equivalent to the numerical values of concentration given in moles per liter (M). For a weak acid, the extent of proton transfer is so small that it is usually assumed that the molar concentration of HA is unchang ...
Acid and Bases Notes
... In a neutralization reaction, an acid and base react to produce some salt and water… at what is called the “equivalence point”, we can say that: Moles of H+ = Moles of OHFor a monoprotic acid and a base with one hydroxide, use the following equation: Ma x Va = Mb x Vb Titrations and Indicators Titra ...
... In a neutralization reaction, an acid and base react to produce some salt and water… at what is called the “equivalence point”, we can say that: Moles of H+ = Moles of OHFor a monoprotic acid and a base with one hydroxide, use the following equation: Ma x Va = Mb x Vb Titrations and Indicators Titra ...
Equilibrium chemistry
Equilibrium chemistry is a concerned with systems in chemical equilibrium. The unifying principle is that the free energy of a system at equilibrium is the minimum possible, so that the slope of the free energy with respect to the reaction coordinate is zero. This principle, applied to mixtures at equilibrium provides a definition of an equilibrium constant. Applications include acid-base, host-guest, metal-complex, solubility, partition, chromatography and redox equilibria.