1. Introduction When we say equilibrium‚ it is a state of balance. It is a condition where there is no change in the state of motion of a body. Equilibrium also may be at rest or moving within a constant velocity. A simple mechanical body is said to be in equilibrium if no part of it is accelerating‚ unless it is disturbed by an outside force. Two conditions for equilibrium are that the net force acting on the object is zero‚ and the net torque acting on the object is zero. Thus‚ the following objectives
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aMX (s) + H2O [pic] aMn+ (aq) + bXm- (aq) The equilibrium expression would be [Mn+]a [Xm-]b [MX]a [H2O] However the concentrations of both the solid AND the water are constants‚ so a new equilibrium expression called Ksp is derived Ksp = [Mn+]a [Xm-]b Note: The product of the concentration of ions of a sparingly soluble salt in water OTHER than at equilibrium is called the IONIC PRODUCT Example 1. AgCl [pic]
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various temperatures. Background: The salt and water solution in this experiment has relatively simple solubility equilibrium of borax in water. Na2B4O7 . 10 H2O 2Na + + B4O5(OH)42- + 8H2O This reaction is an equilibrium process and 8 water molecules from the hydrated salt are lost to the reaction medium. The equilibrium constant expression for this reaction is: K = [Na+]2 [B4O5(OH)42-] [H2O]8
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LESSON PLAN School : Senior High School Topic : Solubility product of Constant (Ksp) Grade : XI Semester : 2 Time Allocated : 30 minutes I. Competency Standard Understanding properties‚ measuring method and applying of acid base solutions. II. Basic Competency Predicting precipitation from a reaction based on solubility and solubility product constant principle III. Indicator 1. Explain the meaning of Solubility Product Constant (Ksp) 2. Write
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points. P 100 d (P) Q 500 1. The figure above shows the demand curve for crude oil. If the market price is $20 a barrel‚ what is the price elasticity of demand? a. 4 b. 0.2 c. 5 d. 0.25 2. Which of the following conditions must hold in an equilibrium of a competitive market where the government imposes a per-unit tax on a good? a. The quantity sold and the price paid by the buyers must lie on the demand curve. b. The quantity sold and the price received by the sellers must lie on the supply
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Restoring Balance LeChâtelier’s Principle and Equilibrium Introduction Chemical equilibrium is a true balancing act. What happens when the balance is disturbed? The purpose of this lab is to observe the effects of concentration and temperature on equilibrium and to visualize how balance can be restored based on LeChâtelier’s Principle. Background Not all chemical reactions proceed to completion‚ that is‚ to give 100% yield of products. In fact‚ most chemical reactions are reversible
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was a paleontologist‚ evolutionary biologist‚ and a historian of science. He spent many years teaching at Harvard as well as at New York University in his later life. Gould‚ along with Niles Eldredge in 1972‚ published the theory of punctuated equilibrium. Their theory stated that creatures had long periods of evolutionary stability occasionally marked with rapid periods of advancement‚ unlike the previously accepted idea of phyletic gradualism‚ which stated that evolution happened constantly and
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the fossil is strong evidence of a gradually changing form. These examples are few and far between. There is very little evidence which supports phyletic gradualism due to no intermediate species being found in the fossil record. Punctuated equilibrium is a theory that evolution is characterized by long periods of stability in the characteristics of an organism and short periods of rapid change during which new forms appear‚ especially from small subpopulations of the ancestral form in restricted
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Economics essay: Examine the concept of market equilibrium and discuss the reasons for and methods of government intervention in markets Market equilibrium is a situation in which the supply of an item is exactly equal to the demand of that item‚ there is no surplus nor shortage. Under the circumstances of market equilibrium‚ prices tend to remain stable. Producers and consumers react differently to changes in price‚ higher prices
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Market Equilibrium of Crude Oil Gina Brazelton Economics 561 April 17‚ 2012 Dr. Jill Trask Market Equilibrium of Crude Oil Market equilibrium occurs when there is no shortage or surplus of a product‚ therefore‚ buyers and sellers get what they want. When there is a change in either the supply or demand this will eventually adjust to a new equilibrium of price and quantity. Right now‚ industries are not only faced with ever-changing periods of consumer demand but their own production inventory
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