Name:_________________________________________ Section________________________ Chemistry 104 Laboratory University of Massachusetts Boston Hexamminenickel(II) Chloride Synthesis _______________________________________________________________________________ PRELAB ASSIGNMENT Calculate the percent yield for the sample data shown on page 3. Answer____________ _______________________________________________________________________________ INTRODUCTION In aqueous solution nickel ion Ni2+ is surrounded
Premium Ammonia Chemistry Water
Question: The aim of this experiment is to calculate the number of moles of water bounded to each mole of cobalt chloride ( CoCl2. H2O). This cobalt chloride hydrated may be monohydrate with 1 mole of water attracted to cobalt chloride. It may be dihydrate‚ trihydrate‚ tetrahydrate or pentahydrate; your task is to determine which one you are given. Hypothesis: If cobalt chloride were heated until there is no further lose in weight‚ 6 moles of water would be lost from 1 mole of salt. Therefore
Premium Water Salt Sodium
colourless blood red The colour produced by the complex ion indicates the position of equilibrium. In this experiment‚ iron(III) chloride solution‚ potassium thiocyanate solution and solid ammonium chloride were added to the mixture solution to find out the factors that affecting the equilibrium position. Procedure Two drops of iron(III) chloride solution and two drops of potassium thiocyanate solution were mixed together in a test-tube and then about 10cm3 of deionized water was added
Premium Ion Chemistry
colourless blood red The colour produced by the complex ion indicates the position of equilibrium. In this experiment‚ iron(III) chloride solution‚ potassium thiocyanate solution and solid ammonium chloride were added to the mixture solution to find out the factors the affecting the equilibrium position. Procedure: Two drops of iron(III) chloride solution and potassium thiocyanate solution were mixed together in a test-tube and then 5cm³ of deionized water was added to form a pale orange-brown
Premium Ion Chemistry Sodium
If sodium chloride is added to a solution with Saccharomyces cerevisiae‚ then sodium chloride should hinder the growth and reproduction of those cells because the salt concentrations will limit the overall efficiency of the cell’s reproductive processes as well as decrease overall colony size. In our experiment‚ we plan to note the effects of salt on S. cerevisiae by both spot plating to note overall cell colony size and the number of total cells and through the use of electro photometry to also
Premium Salt Sodium chloride Water
acid in water with methylene chloride‚ an organic solvent. The amount of leftover acid was determined through the titration of the aqueous‚ not the organic‚ solution with basic NaOH. This allowed the student to calculate and determine the Kd value of both multiple and single extractions. The efficiencies of both single and multiple extractions were observed through this process. The student began with mixing 50 ml of aqueous benzoic acid with 10 ml of methylene chloride inside a seperatory funnel
Premium Solvent Chemistry Benzene
online simulation was used to determine which substances were endothermic or exothermic when dissolved in water. According to the simulation‚ sodium chloride and ammonium chloride was observed to be endothermic. Calcium chloride‚ sodium acetate‚ sodium carbonate‚ and lithium chloride was observed to be exothermic. As sodium chloride and ammonium chloride was observed to be endothermic‚ those two salt substrates was not used in the experiment as the goal of the experiment was to increase temperature
Premium Water Temperature Thermodynamics
example of this process is when calcium chloride dissolved in water. The polar water molecules attracted the oppositely charged Ca2+ and Cl- ions as calcium chloride is a polar molecule as well. The ions brake apart as the water attraction is greater than the ionic bond within the calcium chloride molecule. Solubility is also important for conductivity as some elements such as calcium chloride do not conduct in a solid state. This explains why calcium chloride conducted when dissolved in water and
Premium Chemical polarity Solubility Water
carbonate from aqueous solutions of calcium chloride and sodium carbonate. These solutions will be prepared from 2.01 g of calcium chloride and 1.06 g of sodium carbonate . Materials: 3 beakers 100 mL graduated cylinder rubber policeman funnel filter paper Procedure: 1. Put on your safety goggles. 2. Obtain two clean beakers. Rinse the inside of the beakers with a small amount of distilled water. 3. Obtain the correct amounts of calcium chloride and sodium carbonate. Enter these masses
Premium Water Sodium Filter paper
more acidic 7-Up and white grape juice have been known to rot and corrode teeth. The second experiment we conducted was to test for chloride ions and starch. We did this by adding drops of silver nitrate and iodine to Sodium Chloride‚ starch and distilled water. Our hypothesis for this experiment was that the silver nitrate would react in some way with the sodium chloride and the starch‚ but not with the water. The third experiment we conducted was to test the buffer zone of a buffer solution. We
Premium PH Buffer solution Hydrochloric acid