Chemical Equilibrium is reached when
... (n/V) is the concentration of the gas in M, and it varies directly with P. For the reaction: N2O4(g) 2NO2(g) Increasing the pressure will increase the concentration of both N2O4 and NO2, and because the concentration of NO2 is squared, the increase in the numerator more than the denominator. The s ...
... (n/V) is the concentration of the gas in M, and it varies directly with P. For the reaction: N2O4(g) 2NO2(g) Increasing the pressure will increase the concentration of both N2O4 and NO2, and because the concentration of NO2 is squared, the increase in the numerator more than the denominator. The s ...
Flexbook - Ions and Ion Formation
... 1000 kJ/mol, IE3 = 2000 kJ/mol, and IE4 = 12, 000 kJ/mole, we would immediately identify this atom as a member of family 3A. The large jump occurs between the 3rd and 4th ionization energies, so we know that only the first three electrons can be easily removed from this atom. The logic for the forma ...
... 1000 kJ/mol, IE3 = 2000 kJ/mol, and IE4 = 12, 000 kJ/mole, we would immediately identify this atom as a member of family 3A. The large jump occurs between the 3rd and 4th ionization energies, so we know that only the first three electrons can be easily removed from this atom. The logic for the forma ...
The Complete Notes - Joliet Junior College
... the course. Thus, it is important that the student does not let any ‘gaps’ in their knowledge develop. This fact exemplifies the differences in philosophy between the sciences and arts, as art courses are often more modular in nature. Example: I overhead a student tell another: “Yeah, I blew off rea ...
... the course. Thus, it is important that the student does not let any ‘gaps’ in their knowledge develop. This fact exemplifies the differences in philosophy between the sciences and arts, as art courses are often more modular in nature. Example: I overhead a student tell another: “Yeah, I blew off rea ...
Chemistry 101: The Complete Notes
... the course. Thus, it is important that the student does not let any „gaps‟ in their knowledge develop. This fact exemplifies the differences in philosophy between the sciences and arts, as art courses are often more modular in nature. Example: I overhead a student tell another: “Yeah, I blew off rea ...
... the course. Thus, it is important that the student does not let any „gaps‟ in their knowledge develop. This fact exemplifies the differences in philosophy between the sciences and arts, as art courses are often more modular in nature. Example: I overhead a student tell another: “Yeah, I blew off rea ...
physical setting chemistry
... greater than 1 atmosphere. The bottle containing the solution is capped to maintain that pressure above the solution. As soon as the bottle is opened, fizzing occurs due to CO2(g) being released from the solution. 71 Explain why CO2(g) is released when a bottle of soda water is opened. [1] 72 Write ...
... greater than 1 atmosphere. The bottle containing the solution is capped to maintain that pressure above the solution. As soon as the bottle is opened, fizzing occurs due to CO2(g) being released from the solution. 71 Explain why CO2(g) is released when a bottle of soda water is opened. [1] 72 Write ...
Practice Exam I FR Answers and Explanations
... Cd changes oxidation states from 0 to +2—thus, it is oxidized. Whatever species is oxidized is known as the reducing agent. (c) At a higher temperature, how would the cell potential change? Explain questions such as this with mathematical formulas if at all possible. There are two equations that all ...
... Cd changes oxidation states from 0 to +2—thus, it is oxidized. Whatever species is oxidized is known as the reducing agent. (c) At a higher temperature, how would the cell potential change? Explain questions such as this with mathematical formulas if at all possible. There are two equations that all ...
The p-Block Elements The p-Block Elements
... Ammonia is a colourless gas with a pungent odour. Its freezing and boiling points are 198.4 and 239.7 K respectively. In the solid and liquid states, it is associated through hydrogen bonds as in the case of water and that accounts for its higher melting and boiling points than expected on the basis ...
... Ammonia is a colourless gas with a pungent odour. Its freezing and boiling points are 198.4 and 239.7 K respectively. In the solid and liquid states, it is associated through hydrogen bonds as in the case of water and that accounts for its higher melting and boiling points than expected on the basis ...
Name __KEY____________ Per. ______ Polarity and
... causes the more electronegative element to have a _ slightly_ (full/ slightly) negative charge and the other to have a slightly _ positive_ (positive/ negative) charge. As the difference in electronegativity becomes greater substances will also have __ higher__ (higher/ lower) melting points. This i ...
... causes the more electronegative element to have a _ slightly_ (full/ slightly) negative charge and the other to have a slightly _ positive_ (positive/ negative) charge. As the difference in electronegativity becomes greater substances will also have __ higher__ (higher/ lower) melting points. This i ...
Unit - 7.pmd
... Similarly, in case of phosphorus nearly all intermediate oxidation states disproportionate into +5 and –3 both in alkali and acid. However +3 oxidation state in case of arsenic, antimony and bismuth becomes increasingly stable with respect to disproportionation. Nitrogen is restricted to a maximum c ...
... Similarly, in case of phosphorus nearly all intermediate oxidation states disproportionate into +5 and –3 both in alkali and acid. However +3 oxidation state in case of arsenic, antimony and bismuth becomes increasingly stable with respect to disproportionation. Nitrogen is restricted to a maximum c ...
all practice examples
... the variation of the initial rate with the initial concentration of NO2 (the initial concentration of CO kept constant), was found to be as follows: Experiment ...
... the variation of the initial rate with the initial concentration of NO2 (the initial concentration of CO kept constant), was found to be as follows: Experiment ...
Chemistry - Separation techniques
... C3.1f describe the physical states of products and reactants using state symbols (s, l, g and aq) C3.1k deduce the stoichiometry of an equation from the masses of reactants and products and explain the effect of a limiting quantity of a reactant C3.3d describe neutralisation as acid reacting with al ...
... C3.1f describe the physical states of products and reactants using state symbols (s, l, g and aq) C3.1k deduce the stoichiometry of an equation from the masses of reactants and products and explain the effect of a limiting quantity of a reactant C3.3d describe neutralisation as acid reacting with al ...
9647 H2 Chemistry
... A variable number of structured questions including one or two data-based questions and a question on Planning. All questions are compulsory and answered on the question paper. The data-based question(s) constitute(s) 15–20 marks for this paper whilst the Planning question constitutes 12 marks for t ...
... A variable number of structured questions including one or two data-based questions and a question on Planning. All questions are compulsory and answered on the question paper. The data-based question(s) constitute(s) 15–20 marks for this paper whilst the Planning question constitutes 12 marks for t ...
Ch. 16 Study Guide
... can only use equilibrium concentrations in the Kc /Kp expression, (2) initial concentrations should be in molarity if using Kc , (3) changes in concentrations always occur in the same ratio as the coefficients in the balanced equation, and (4) all reactants should change in one direction while all p ...
... can only use equilibrium concentrations in the Kc /Kp expression, (2) initial concentrations should be in molarity if using Kc , (3) changes in concentrations always occur in the same ratio as the coefficients in the balanced equation, and (4) all reactants should change in one direction while all p ...
Chemical Equilibrium
... The equilibrium constant of a reaction that has been multiplied by a number is the equilibrium constant raised to a power equal to that number The equilibrium constant for a net reaction of two or more steps is the product of the constants of the individual steps ...
... The equilibrium constant of a reaction that has been multiplied by a number is the equilibrium constant raised to a power equal to that number The equilibrium constant for a net reaction of two or more steps is the product of the constants of the individual steps ...
Amount of substance
... f) reaction of sodium hydrogencarbonate (aq) with sulfuric acid (aq) g) precipitation of calcium sulfate from reaction between calcium chloride (aq) and sulfuric acid (aq) h) precipitation of lead (II) chloride from reaction between lead nitrate (aq) and sodium chloride (aq) ...
... f) reaction of sodium hydrogencarbonate (aq) with sulfuric acid (aq) g) precipitation of calcium sulfate from reaction between calcium chloride (aq) and sulfuric acid (aq) h) precipitation of lead (II) chloride from reaction between lead nitrate (aq) and sodium chloride (aq) ...
FE Exam Review for Chemistry
... Acids, bases & neutralization reactions Acids can donate H ions (begin with H) Bases can accept H ions (typically OH‐ or NH3) ...
... Acids, bases & neutralization reactions Acids can donate H ions (begin with H) Bases can accept H ions (typically OH‐ or NH3) ...
File
... This is a large number! This scale of number allows us to manipulate minute atoms or molecules by number or mass accurately. Formula or Molecular weight This is the weight in grams of an ionic (formula) or covalent compound (molecular). To be able to calculate this we need to understand molar mass. ...
... This is a large number! This scale of number allows us to manipulate minute atoms or molecules by number or mass accurately. Formula or Molecular weight This is the weight in grams of an ionic (formula) or covalent compound (molecular). To be able to calculate this we need to understand molar mass. ...
Textbook sample chapter
... its temperature and pressure. So, to find the mass of a gas after measuring its volume, you need to understand the way that gases change in volume when temperature and pressure change. Each gas behaves very slightly differently compared with other gases but, for most practical purposes, the differen ...
... its temperature and pressure. So, to find the mass of a gas after measuring its volume, you need to understand the way that gases change in volume when temperature and pressure change. Each gas behaves very slightly differently compared with other gases but, for most practical purposes, the differen ...
CHEM 1211 and CHEM 1212 National ACS Exams About the Exam
... formulas and techniques. Rather, it is a coherent set of knowledge that enables comprehension of the submicroscopic (chemical) world. As such, the ACS tests seek to uncover such genuine understanding. CHEM 1211 Example Questions There is an emphasis on conceptual questions. The actual exam wi ...
... formulas and techniques. Rather, it is a coherent set of knowledge that enables comprehension of the submicroscopic (chemical) world. As such, the ACS tests seek to uncover such genuine understanding. CHEM 1211 Example Questions There is an emphasis on conceptual questions. The actual exam wi ...
PH
In chemistry, pH (/piːˈeɪtʃ/) is a numeric scale used to specify the acidity or alkalinity of an aqueous solution. It is the negative of the logarithm to base 10 of the activity of the hydrogen ion. Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are alkaline or basic. Pure water is neutral, being neither an acid nor a base. Contrary to popular belief, the pH value can be less than 0 or greater than 14 for very strong acids and bases respectively.pH measurements are important in medicine, biology, chemistry, agriculture, forestry, food science, environmental science, oceanography, civil engineering, chemical engineering, nutrition, water treatment & water purification, and many other applications. The pH scale is traceable to a set of standard solutions whose pH is established by international agreement.Primary pH standard values are determined using a concentration cell with transference, by measuring the potential difference between a hydrogen electrode and a standard electrode such as the silver chloride electrode.The pH of aqueous solutions can be measured with a glass electrode and a pH meter, or indicator.pH is the negative of the logarithm to base 10 of the activity of the (solvated) hydronium ion, more often (albeit somewhat inaccurately) expressed as the measure of the hydronium ion concentration.The rest of this article uses the technically correct word ""base"" and its inflections in place of ""alkaline"", which specifically refers to a base dissolved in water, and its inflections.