CHM1022 Tutorial 2 – Semester 2‚ 2012 (Chemical Equilibria) 1. The reaction 2 HCl(g) +I2(s) [pic] 2 HI (g) + Cl2(g) has Kc = 1.0 x 10-34 at 25˚C. If a 1.00 L reaction vessel initially contains 0.100 mol of each HCl and solid I2‚ what are the concentrations of HI and Cl2 at equilibrium? 2. Consider the following gas-phase reaction and equilibrium constant at 25 oC: 4 HCl(g) + O2(g) [pic] 2 Cl2(g) + 2 H2O(g) The concentrations of all species were measured at a particular
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Chem Exam - ‘98 1. Solve the following problem related to the solubility equilibria of some metal hydroxides in aqueous solution. (a) The solubility of Cu(OH)2(s) is 1.72 x10–6 g/100. mL of solution at 25° C. (i) Write the balanced chemical equation for the dissociation of Cu(OH)2(s) in aqueous solution. Cu(OH)2 Cu 2+ + 2 OH – (ii) Calculate the solubility (in mol/L) of Cu(OH)2 at 25 °C. (1.72 x10–6 g/0.100 L)(1 mol/97.5 g) = 1.76 x10–7 mol/L (iii) Calculate
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think the eyes of Dr. TJ Euckelburg were included specifically for one particular character in The Great Gatsby based on their thoughts‚ actions‚ etc.? 2. How do Nick’s qualities as a character affect his narration? 3. How exactly does Gatsby represent the American Dream? 4. What are the apparent strengths of Jay Gatsby? 5. How does The Great Gatsby relate to current society? Chapter 1-2 1. The Notebook‚ The Vow‚ Fast and Furious‚ The Crucible‚ Friends With Benefits‚ Hall Pass
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of Experiment: Observation of Chemical Changes Purpose: To examine the reaction of common chemicals from household consumer products‚ and the changes they undergo. Procedure: After combining the chemicals listed below in Data Table 1‚ I observed the mixture against white and dark backgrounds by slipping white and black paper underneath the well plate. For every reaction‚ I wrote down the chemical combination‚ the well number‚ and my observations of the chemical reactions against the white and
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movie representing her actions‚ as well. The acclaimed movie‚ The Young Victoria‚ stars Queen Victoria‚ played by Emily Blunt‚ and Prince Albert‚ who prove their selfless love for each other after living in other people’s worlds. The movie shows Victoria’s struggle to find herself while she finds her allies too. I believe that the movie‚ The Young Victoria‚ is not an accurate portrayal of the real life events of Queen Victoria because of incorrect representation of Victoria’s love interest Albert
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Classifying Chemical Reactions Introduction Pre-lab questions 1. Which reactants used in this experiment are flammable? Discuss the safety precautions that are necessary when working with flammable materials in the lab? 2. Summarize the following description of a chemical reaction in the form of a balanced chemical equation? 3. Common observations of a chemical reaction are described in the introduction section. For each observation‚ name a common or everyday occurrence that must involve a chemical reaction
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The objective: In this experiment‚ I decided to find out how temperature would affect endothermic reactions compared to exothermic reactions. An endothermic reaction absorbs energy in the form of heat. This reaction feels cold because it is taking heat away from its surroundings. It also releases gases. An exothermic reaction is a reaction that releases energy as heat. Since the energy is released‚ the exothermic reactions feel hot. Methods/Materials I did three experiments. I mixed lemon juice
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Physical and Chemical Changes Say you are presented with two beakers‚ beaker A and beaker B‚ each containing a white‚ powdery compound. * a. From your initial observations‚ you suspect that the two beakers contain the same compound. Describe‚ in general terms‚ some experiments in a laboratory that you could do to help prove or disprove that the beakers contain the same compound. You may try some of the followings: * Dissolving in water * Dissolving in different chemical solution
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Bilal Al- Qureshi‚ Said Business School‚ University of Oxford 2010 American Chemical Corporation HBS Case Number: 9-290-102 Executive Summary The American Chemical Corporation (AMC) is a large‚ diversified chemical producer. In 1979‚ AMC was forced to issue a tender to sell a Sodium Chlorate plant‚ near Collinsville‚ Alabama. Dixon‚ a specialty chemicals company‚ was willing to purchase the aforementioned plant for $12m with the option to invest a further $2.25m on laminate technology. The
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Industrial Chemical Processes Essay Tan Hung Kai Grade 11 In our present world‚ there are thousands of chemical processes that are being used to produce products that benefits our daily lives. Industrial Chemical processes are used for “transforming raw materials into useful commercial products for society”. (Dr. Philip Britz-Mckibbin Industrial Chemistry: CHEM 2013) Examples of industrial chemical processes include distillation‚ smelting‚ disinfection‚ and Pyro processing. Even today‚ scientists
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