Physical and Chemical equilibrium
... According to law of active mass action Rate of forward reaction rf ∝ [A]a [B]b Rate of backward reaction rb ∝ [C]c [D]d Active mass of a substance is simply number of moles dissolved per litre of the solution. Active mass of a gas or liquid is equal to its pressure or molar concentration, where as a ...
... According to law of active mass action Rate of forward reaction rf ∝ [A]a [B]b Rate of backward reaction rb ∝ [C]c [D]d Active mass of a substance is simply number of moles dissolved per litre of the solution. Active mass of a gas or liquid is equal to its pressure or molar concentration, where as a ...
- Kendriya Vidyalaya No. 2 Raipur
... 1 Chemical reaction— Chemical changes or chemical reactions are the changes in which one or more new substances are formed. 2 Chemical Equations – Representation of a chemical reaction in terms of symbols and formulae of the reactants and products is known as chemical equation. 3 Balanced Chemical e ...
... 1 Chemical reaction— Chemical changes or chemical reactions are the changes in which one or more new substances are formed. 2 Chemical Equations – Representation of a chemical reaction in terms of symbols and formulae of the reactants and products is known as chemical equation. 3 Balanced Chemical e ...
File
... 1 Chemical reaction— Chemical changes or chemical reactions are the changes in which one or more new substances are formed. 2 Chemical Equations – Representation of a chemical reaction in terms of symbols and formulae of the reactants and products is known as chemical equation. 3 Balanced Chemical e ...
... 1 Chemical reaction— Chemical changes or chemical reactions are the changes in which one or more new substances are formed. 2 Chemical Equations – Representation of a chemical reaction in terms of symbols and formulae of the reactants and products is known as chemical equation. 3 Balanced Chemical e ...
Chemistry Standards Clarification
... Academy, in collaboration with the Michigan Mathematics and Science Center Network and the Michigan Science Teachers Association, worked in partnership with Michigan Department of Education to develop this companion document. Our goal is for each student to master the science content expectations as ...
... Academy, in collaboration with the Michigan Mathematics and Science Center Network and the Michigan Science Teachers Association, worked in partnership with Michigan Department of Education to develop this companion document. Our goal is for each student to master the science content expectations as ...
Formatting Blackline Masters
... 1. Salt (NaCl) is a homogeneous material that can be decomposed into individual elements (sodium and chlorine). The properties of the salt differ from the properties of the elements. Salt is a compound. 2. Water (H2O) is a homogeneous material that can be decomposed into elements (hydrogen and oxyge ...
... 1. Salt (NaCl) is a homogeneous material that can be decomposed into individual elements (sodium and chlorine). The properties of the salt differ from the properties of the elements. Salt is a compound. 2. Water (H2O) is a homogeneous material that can be decomposed into elements (hydrogen and oxyge ...
1411 Practice Exam 1
... Naturally-occurring copper is composed of 69.17% copper-63 with an atomic weight of 62.9396 amu, and 30.83% of another copper isotope. If the average (weighted average) atomic weight of copper is 63.546 amu, what is the atomic weight of the other copper isotope? (3 pts) ...
... Naturally-occurring copper is composed of 69.17% copper-63 with an atomic weight of 62.9396 amu, and 30.83% of another copper isotope. If the average (weighted average) atomic weight of copper is 63.546 amu, what is the atomic weight of the other copper isotope? (3 pts) ...
Topic 6 Section C
... (1) When aqueous chlorine is added to sodium bromide solution, the solution becomes orange/brown due to the formation of bromine. Adding an organic solvent to the reaction mixture gives an orange layer. When aqueous chlorine is added to sodium iodide solution, the solution becomes brown due to the f ...
... (1) When aqueous chlorine is added to sodium bromide solution, the solution becomes orange/brown due to the formation of bromine. Adding an organic solvent to the reaction mixture gives an orange layer. When aqueous chlorine is added to sodium iodide solution, the solution becomes brown due to the f ...
Chemistry 1411 Practice Exam 1, Chapters 1
... Naturally-occurring copper is composed of 69.17% copper-63 with an atomic weight of 62.9396 amu, and 30.83% of another copper isotope. If the average (weighted average) atomic weight of copper is 63.546 amu, what is the atomic weight of the other copper isotope? (3 pts) ...
... Naturally-occurring copper is composed of 69.17% copper-63 with an atomic weight of 62.9396 amu, and 30.83% of another copper isotope. If the average (weighted average) atomic weight of copper is 63.546 amu, what is the atomic weight of the other copper isotope? (3 pts) ...
CHAPTER 2 ATOMS, MOLECULES, AND IONS Questions
... noble gas (a nonmetal). For statement c, hydrogen has mostly nonmetallic properties. For statement d, a family of elements is also known as a group of elements. For statement e, two items are incorrect. When a metal reacts with a nonmetal, an ionic compound is produced, and the formula of the compou ...
... noble gas (a nonmetal). For statement c, hydrogen has mostly nonmetallic properties. For statement d, a family of elements is also known as a group of elements. For statement e, two items are incorrect. When a metal reacts with a nonmetal, an ionic compound is produced, and the formula of the compou ...
CHAPTER 2 ATOMS, MOLECULES, AND IONS Questions
... noble gas (a nonmetal). For statement c, hydrogen has mostly nonmetallic properties. For statement d, a family of elements is also known as a group of elements. For statement e, two items are incorrect. When a metal reacts with a nonmetal, an ionic compound is produced, and the formula of the compou ...
... noble gas (a nonmetal). For statement c, hydrogen has mostly nonmetallic properties. For statement d, a family of elements is also known as a group of elements. For statement e, two items are incorrect. When a metal reacts with a nonmetal, an ionic compound is produced, and the formula of the compou ...
DEPARTMENT OF CHEMISTRY AND CHEMICAL TECHNOLOGY
... (b) The reaction quotient for a reaction has a value of 75 while the equilibrium constant has a value of 195. Which of the following statements is accurate? 1. The reaction must proceed to the left to establish equilibrium. 2. The reaction must proceed to the right to establish equilibrium. 3. The c ...
... (b) The reaction quotient for a reaction has a value of 75 while the equilibrium constant has a value of 195. Which of the following statements is accurate? 1. The reaction must proceed to the left to establish equilibrium. 2. The reaction must proceed to the right to establish equilibrium. 3. The c ...
Table of Contents
... ___________________ that traps the solid particles while the liquid passes through in a process called filtering. Some simple methods also exist for separating homogeneous mixtures. A solid dissolved in a liquid solution can be separated by letting it dry out in the process of ___________________. M ...
... ___________________ that traps the solid particles while the liquid passes through in a process called filtering. Some simple methods also exist for separating homogeneous mixtures. A solid dissolved in a liquid solution can be separated by letting it dry out in the process of ___________________. M ...
fulltext
... Observed at macro scale proteins behave in unexpected ways. E.g. with rising temperature a protein solution (such as egg white) will turn into a semi solid (an omelette6) whereas many other compounds or solutions thereof typically melt or lower in viscosity. This is a result of unfolding and subsequ ...
... Observed at macro scale proteins behave in unexpected ways. E.g. with rising temperature a protein solution (such as egg white) will turn into a semi solid (an omelette6) whereas many other compounds or solutions thereof typically melt or lower in viscosity. This is a result of unfolding and subsequ ...
Theories of the constitution of gases in the early nineteenth century
... heat and heat content (in an archaic sense defined later on) and to his belief that gas particles were more or less stationary. All these influences will be considered in detail in the next chapters. Chemists showed a utilitarian attitude towards hypotheses and their scepticism seems to have been r ...
... heat and heat content (in an archaic sense defined later on) and to his belief that gas particles were more or less stationary. All these influences will be considered in detail in the next chapters. Chemists showed a utilitarian attitude towards hypotheses and their scepticism seems to have been r ...
The First Steps of Chemical Evolution towards the
... form of rain falls. In such a hot atmosphere, events like wind and thunderstorms must have been much more violent than they are today. Since it cannot easily be assumed that chemical evolution could have happened rapidly enough and in larger amounts before the existence of liquid water as a solvent ...
... form of rain falls. In such a hot atmosphere, events like wind and thunderstorms must have been much more violent than they are today. Since it cannot easily be assumed that chemical evolution could have happened rapidly enough and in larger amounts before the existence of liquid water as a solvent ...
TOPIC 7. CHEMICAL CALCULATIONS I
... Because the masses of atoms of different elements are different, in quantitative calculations it is not possible to say, for example, that if one atom of element A reacts with one atom of element B, then 1 gram of A reacts exactly with 1 gram of B. Thus while atoms do actually combine in simple inte ...
... Because the masses of atoms of different elements are different, in quantitative calculations it is not possible to say, for example, that if one atom of element A reacts with one atom of element B, then 1 gram of A reacts exactly with 1 gram of B. Thus while atoms do actually combine in simple inte ...
Calculations and the Chemical Equation
... carbon dioxide produced from the combustion of one mole of propane. Relating masses of reactants and products: calculation of the mass of propane needed to produce a given amount of water. Calculating a quantity of reactant: the reaction of hydrochloric acid with calcium hydroxide. Calculating react ...
... carbon dioxide produced from the combustion of one mole of propane. Relating masses of reactants and products: calculation of the mass of propane needed to produce a given amount of water. Calculating a quantity of reactant: the reaction of hydrochloric acid with calcium hydroxide. Calculating react ...
TOPIC 7. CHEMICAL CALCULATIONS I
... Because the masses of atoms of different elements are different, in quantitative calculations it is not possible to say, for example, that if one atom of element A reacts with one atom of element B, then 1 gram of A reacts exactly with 1 gram of B. Thus while atoms do actually combine in simple inte ...
... Because the masses of atoms of different elements are different, in quantitative calculations it is not possible to say, for example, that if one atom of element A reacts with one atom of element B, then 1 gram of A reacts exactly with 1 gram of B. Thus while atoms do actually combine in simple inte ...
Final Exam Review Notes
... – All atoms of one type of element always behave the same way. – Atoms of different elements do not behave the same way. 3. Two or more elements combine to form compounds. law of constant composition: A compound always has the same elements in the same proportion by mass – i.e. a compound always has ...
... – All atoms of one type of element always behave the same way. – Atoms of different elements do not behave the same way. 3. Two or more elements combine to form compounds. law of constant composition: A compound always has the same elements in the same proportion by mass – i.e. a compound always has ...
Chapter One
... and oxygen in the ratio of two atoms of hydrogen to one atom of oxygen. If we tried to divide a sample of water into infin itesimally small portions, we would eventually end up with a s ingle molecule of water containing two hydrogen atoms and one oxygen atom. If we tried to break this molecule into ...
... and oxygen in the ratio of two atoms of hydrogen to one atom of oxygen. If we tried to divide a sample of water into infin itesimally small portions, we would eventually end up with a s ingle molecule of water containing two hydrogen atoms and one oxygen atom. If we tried to break this molecule into ...
FREE Sample Here
... Topic: Section 6.4 Yields of Chemical Reactions 44) When methane, CH4, undergoes combustion with oxygen, the usual products are carbon dioxide and water. Carbon monoxide is formed when the limiting reactant is A) carbon dioxide. B) methane. C) oxygen. D) water. Answer: C Diff: 2 Topic: Section 6.5 R ...
... Topic: Section 6.4 Yields of Chemical Reactions 44) When methane, CH4, undergoes combustion with oxygen, the usual products are carbon dioxide and water. Carbon monoxide is formed when the limiting reactant is A) carbon dioxide. B) methane. C) oxygen. D) water. Answer: C Diff: 2 Topic: Section 6.5 R ...
Stoichiometry
Stoichiometry /ˌstɔɪkiˈɒmɨtri/ is the calculation of relative quantities of reactants and products in chemical reactions.Stoichiometry is founded on the law of conservation of mass where the total mass of the reactants equals the total mass of the products leading to the insight that the relations among quantities of reactants and products typically form a ratio of positive integers. This means that if the amounts of the separate reactants are known, then the amount of the product can be calculated. Conversely, if one reactant has a known quantity and the quantity of product can be empirically determined, then the amount of the other reactants can also be calculated.As seen in the image to the right, where the balanced equation is:CH4 + 2 O2 → CO2 + 2 H2O.Here, one molecule of methane reacts with two molecules of oxygen gas to yield one molecule of carbon dioxide and two molecules of water. Stoichiometry measures these quantitative relationships, and is used to determine the amount of products/reactants that are produced/needed in a given reaction. Describing the quantitative relationships among substances as they participate in chemical reactions is known as reaction stoichiometry. In the example above, reaction stoichiometry measures the relationship between the methane and oxygen as they react to form carbon dioxide and water.Because of the well known relationship of moles to atomic weights, the ratios that are arrived at by stoichiometry can be used to determine quantities by weight in a reaction described by a balanced equation. This is called composition stoichiometry.Gas stoichiometry deals with reactions involving gases, where the gases are at a known temperature, pressure, and volume and can be assumed to be ideal gases. For gases, the volume ratio is ideally the same by the ideal gas law, but the mass ratio of a single reaction has to be calculated from the molecular masses of the reactants and products. In practice, due to the existence of isotopes, molar masses are used instead when calculating the mass ratio.