EXPERIMENT 2 ACID DISSOCIATION CONSTANT OF AN INDICATOR DYE OBJECTIVES Using spectrophotometric method: determine the wavelengths at which the acid and base forms of the dye in aqueous medium exhibit maximum absorption; determine the molar absorptivities of the acid and base forms of the dye and estimate an unknown concentration of the dye in solution using the Beer-Lambert’s Law; and determine the acid dissociation constant of the indicator dye. THEORY The absorption or reflection of
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LAB REPORT 4 DETERMINING AN EQUILIBRIUM CONSTANT CAUSION 1. Potassium thiocyanate (KSCN) is hazardous 2. Wear protective material before performing the experiment. INTRODUCTION This experiment outlines the techniques necessary to determine the equilibrium constant for the formation of an iron(III) thiocyanate complex ion (FeSCN2+) from Fe3+ and SCN- . The quantitative preparation of several solutions and subsequent measurement of the solution absorbance
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February 25‚ 2013 Lab: Equilibrium of Forces Purpose/Objective: The objective of this lab was to test the first condition of equilibrium for a set of concurrent coplanar forces‚ prove Lami’s Theorem‚ and to determine an unknown mass using rules of equilibrium. Procedure: In the lab‚ we wanted to find at what angles three separate weights would create a net zero force on a force table so that the ring holding the weights was exactly centered in the middle
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the LAW OF ______________________________________. 2. Newton’s first law says that a. an object that IS NOT MOVING‚ or is at ___________________________‚ will stay at ___________________‚ AND b. an object that IS MOVING will keep moving with constant __________________________‚ which means at the same _____________________ and in the same ________________________‚ UNLESS c. an ______________________________ force acts on that object. 3. What is inertia? 4. What property of an object
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poverty‚ unemployment‚ low industrialization. Adding to the power imbalance were cultural‚ ethnic and religious differences‚ and resentment at the disparity and dependency on the West. Power imbalance. Because of the power imbalance there was a constant danger of imposing a Western style solution. As the Western partners were offering financial aid‚ this was especially difficult to navigate.
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THE CONSTANT GARDENER CHARACTER ANALYSIS Major Characters: Who is he/she? Role and function. Connotaions of name What values or ideas do they represent? Justin Quayle Tessa Quayle Sandy Woodrow Kenny Curtiss Sir Bernard Pellegrin Arnold Bluhm Tim Donohue Ghita Pearson Dr Lorbeer IN-DEPTH ANALYSIS of MAIN CHARACTERS Consider what main techniques are used to present an impression of
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CHEMICAL EQUILIBRIUM Reversible reactions and dynamic equilibrium Ammonia (NH3) is an important industrial chemical that is used in the manufacture of fertilisers. It is manufactured by reacting hydrogen with nitrogen. The reaction is said to be reversible and the conversion of reactants to products is never complete. N2 + 3H2 2NH3 A reversible reaction is a reaction which can take place in either direction When the concentrations of the reactants and product have become constant‚ a state
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07.04 Equilibrium: Lab Report Equilibrium Lab Report Data and Observations: Part I ROUND CANDIES ON R SIDE CANDIES ON P SIDE 0 40 0 1 20 20 2 15 25 3 14 26 4 14 26 5 14 26 6 14 26 7 14 26 8 14 26 9 14 26 10 14 26 Ratio = 0.7 Part II ROUND CANDIES ON R SIDE CANDIES ON P SIDE 0 20 20 1 5 10 2 2.5 2.5 3 0.6 1.5 4 0.3 0.3 5 0.8 0.15 6 0.04 0.4 7 0.1 0.02 8 0.005
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THERMAL EQUILIBRIUM AND TEMPERATURE Two systems are said to be in thermal equilibrium with each other‚ if they are at the same temperature. ZEROTH LAW OF THERMODYNAMICS It states that if two systems A and B are in thermal equilibrium with a third system C‚ then A and B must be in thermal equilibrium with each other. Fig. 1.01 shows two systems A and B separated by an adiabatic wall (a wall which does not allow hear flow).The two systems are placed in contact
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Market Equilibrium Process ECO/560 August 1‚ 2012 David Flesh Market Equilibrium Process Managers must understand the market equilibrium process to make a proper determination on their products. In this paper this author will analyze the law of demand‚ determinants of demand law of supply‚ determinants of supply‚ market equilibrium‚ changes in equilibrium‚ Kellogg’s equilibrium analysis‚ efficient market theory‚ and surplus and shortage. Law of Supply and Demand In business there must be
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