Lab: 5 Experiment:13 Pre-Lab The purpose of this experiment is to observe an equilibrium reaction counteracting changes to it’s system all in accordance to Le Chatelier’s principle. An equilibrium reaction can be pushed toward products or reactant based on changes in temperature or concentration. The reversibility of reaction will also be looked at. Pre-Lab questions 1. The concentrations of products and concentrations of reactants remain constant but both reactions
Premium Color Acid Hydrogen
Transparency examination‚ the presence of white particulate matter was noted. Possibilities include casts (indicative of disease - uncommon)‚ epithelial cells‚ crystal formation‚ or contamination. Further investigation is required to determine cause. Sodium levels were very slightly below normal‚ which is no cause for concern. WBCs were present in moderate amounts‚ possibly indicating a urinary tract infection. This could also be due to lack of aseptic technique during collection. The absence of nitrites
Premium Urine Blood Sodium
after "Robert Bunsen"‚ is a lab piece equipment that produces a single flame which is used for heating‚sterilization and combustion. Our instructor‚ Dr. Immel‚ provided us with six heavy metals those metals were: Barium‚ Calcium‚ Lithium‚ Potassium‚ Sodium‚ Strontium. My group got a platinum flame loop‚ and decontaminated it with the water beaker filled half way with water. To light the Bunsen burner my group used a striker‚ which Dr. Immel provided. We started off with Barium‚ when Charlotte put it
Premium Electrolysis Light Sodium
Ethanol is flammable Sodium hypochlorite is an oxidizing agent and releases toxic fumes (handle in fume hood) Acetic acid is corrosive‚ harmful if inhaled‚ flammable and can cause burns (handle in fume hood) Gloves are recommended to avoid chemical contact with skin Reaction Scheme: Conversion of acetanilide to p-bromoacetanilide Procedure: To a 125 mL Erlenmeyer flask containing a mixture of 95% ethanol (6 mL) and acetic acid (5 mL)‚ dissolve acetanilide (7.4 mmol) and sodium bromide (1.8 g). Place
Premium Ethanol Acetic acid Solvent
become: K = [Na+]2 [B4O5(OH)42-] The first equilibrium expression and the balanced solubility equilibrium reaction allow us to express either borate ion or sodium ion in terms of the other. So‚ it is possible to determine the constant in terms of either ion. After substituting borax ion in place of the sodium ion‚ ([Na+] = 2 [B4O5(OH)42-] ‚ K = (2 [B4O5(OH)42-] )2 * [B4O5(OH)42-] ) we get: K = 4 [B4O5(OH)42-]3 . Finding the concentration of borate ion in any sample
Premium Solubility Chemical equilibrium Water
experiment involved the preparation of the working standard Cu(II) solution of specific concentration from CuSO4•5H2O. A standard sodium thiosulfate (Na2S2O3) solution was also prepared to serve as the titrant for the analysis. Proper handling should be administered for this solution since it decomposes into its component ions when it is exposed to acids‚ light‚ and bacteria. Sodium carbonate was added to the solution to act as a preservative. Boiled distilled water was also used in dissolving the crystals
Premium Titration Sodium Iodine
Paraphrasing 1. What is paraphrasing? - A (more or less) free rewording of an expression or text‚ as an explanation‚ clarification and translation. “Paraphrasing‚ or translation with latitude‚ where the author is kept in view…but his words are not as strictly followed as his sense” (John Dryen‚ preface to his translation of Ovid‚ 1680) - An act or result of rewording (Ex. Simplified version of a legal document) - To make a paraphrase: to translate or define loosely
Premium Electric charge Sodium
1_________________ 14. How do the total masses of the reactants and products compare?______________equal_________________ Section 11.1 continued In your textbook‚ read about mole ratios. Answer the questions about the following chemical reaction. sodium iron(III) oxide → sodium oxide iron 6Na(s) Fe2O3(s) → 3Na2O(s) 2Fe(s) 15. What is a mole ratio? A mole ratio is a ratio
Premium Stoichiometry Oxygen Mole
PRACTICAL 2: Preparation of sodium hexanitrocobaltate (III) Date: 12 March 2014 INTRODUCTION Sodium hexanitrocobaltate (III) is a coordination complex which has the formula Na3[Co(NO2)6]. This compound is yellow in colour. It consists of a central Co3+ ion surrounded by six nitro ligands [1]. This compound is used as a qualitative test for potassium and ammonium ions (so long as certain other cations are not present) [1]. Potassium and ammonium are insoluble in water‚ while sodium is [1]. Hence‚ the
Free Ion Mole Oxygen
active transport of sodium potassium pumps will decrease dramatically due to the lessened concentration of pumps. If the same transport was run without ATP. it would not work‚ hence justifying that it is not simple diffusion‚ and rather was active transport‚ which requires the use of ATP. No‚ because the two substances are the same in each beaker‚ causing no effect on Na+ transport as they are at equilibrium. The rate of ion transport would increase when the number of sodium-potassium pump proteins
Premium Potassium Chemistry Adenosine triphosphate