Carlie Haeffner Qualitative Analysis March 20‚ 2015 The purpose of this lab is to identify unknown ions in a solution by using a type of chemical reaction called precipitate reactions. The key to finding which ions are present in a solution is to form a precipitate which makes the ions “come out” in a reaction (McNeil‚ 2013-2014). Water is used in these experiments to act as a solvent. Since water is a polar molecule‚ the slightly positive and negative charges will sometimes pull apart molecules
Premium Chemistry Water Experiment
EXPERIMENT 2: COMMON-ION EFFECT AND BUFFERS MARVILE REA R. FERRER1 1DEPARTMENT OF MINING‚ METALLURGICAL & MATERIALS ENGINEERING‚ COLLEGE OF ENGINEERING UNIVERSITY OF THE PHILIPPINES‚ DILIMAN‚ QUEZON CITY 1101‚ PHILIPPINES DATE SUBMITTED: DECEMBER 13‚ 2012 DATE PERFORMED: DECEMBER 07‚ 2012 ______________________________________________________________________________________________________________ INTRODUCTION Monitoring the pH range of a laboratory reaction or a process is very
Free PH PH indicator Buffer solution
CHLORIDE (KCL) AND POTASSIUM IODIDE (KI) IN WATER VARY WITH TEMPERATURE? AIM To observe solubilities of KCl and KI with water at different temperatures To compare the two solubility curves and discuss what might vary the solubility of different ionic compounds. THE VARIABLES DEPENDENT VARIABLE Temperature INDEPENDENT VARIABLE Amount of solute (KCl‚ KI) CONSTANTS Amount of the solvent (water)‚ pressure APPARATUS 100G OF POTASSIUM CHLORIDE 100G OF POTASSIUM IODIDE 10ML CYLINDER TEST TUBES
Premium Ion Sodium chloride Potassium
(vi) Ion-induced dipole interactions [20(b)] In these interactions ion’s field induces a dipole moment in a molecule. If μ is the induced moment in a field E‚ ‘α’ is the polarizability (assumed to be constant)‚ then (26) (27) where FZ is the instantaneous force on the induced dipole (R >> δ) and the interaction energy at a given R‚ is (28) As the induced dipole is parallel to the field
Premium Electron Quantum mechanics Fundamental physics concepts
LAB 3.Ø.Ø: do ions combine in definite ratios PURPOSE The purpose of this investigation is to determine whether ions combine in definite ratios or not. To observe‚ and create a table of the different ions. QUESTION If copper (II) sulfate when mixed with sodium carbonate at different quantities combine to form ions in definite ratios. HYPOTHESIS / PREDICTION I believe that the ions will combine in definite ratios due to the fact that the valance electrons will not be changing throughout any
Premium Chemistry Ratio Chemical reaction
UCD School of Chemical & Bioprocess Engineering CHEN20040 Chemical & Bioprocess Engineering Laboratory I Experiment: 1 Title: Reaction order of the oxidation of iodide by persulphate in neutral solution Name: Lab Partner: Group: Experiment Performed: Report Due: Report Submitted: Table of Contents Abstract Page 3 Materials and Methods 4 Results and Discussion 5 Conclusion 10 Report Questions 11 Appendices Appendix A. Experimental Data
Premium Rate equation Chemical kinetics Reaction rate
. ~.. r .. .‚III/!I.. ‚• •f t . ‚.‚;;;‚UUft Y f__ _ P_RO_O_O_c_1 PDS: 1-16 _DA_T_A_S_f5l~_T GU_IT_erl_t: SUperseI &10 l-10 Neme‚‚ . _ nrkc Gnphlte Anoryhout Gnphite Ctey Siticr Tdc Ilcrtrin ’ . -‚ _ OSHApcl CAS# . ‚. N.iosL 77t242-S 2.5 2.5 778?‚42-5 2‚5 2.5 [5’15" l?32-58-57 t4g0g60-? 0.051o lI 14t0?-96-6 2.0 2.0 9004-53-9 "Retpirablc fraction - .... ACSF t{v 2.5 2..5 l0 0.I 2.0 _ _‚ _ in mluesacprcsscd mg/m3 TotalDust I Respirablc dust IEYSfCIi
Premium
1. When glucose‚ C6H12O6‚ is completely oxidized with excess oxygen‚ what are the products? A. H2O2 and CO2 B. H2O and CO2 C. H202 and CO D. H2O and CO 2. Which ion may form a scummy precipitate with ordinary soap? (soap has a negative charge) A. HCO3- B. CO32- C. Na+ D. Ca2+ 3. An element forms a basic oxide with the formula XO and a hydride with the formula XH2. The hydride reacts with water to give hydrogen gas. The element X could be? A. K B. Ca C. N D. O 4. Which metal reacts with concentrated
Premium Oxygen Chemistry Water
Urea is produced in the liver from excess amino acids. Where are the substances excreted? Carbon dioxide is passed from the cells of respiring tissues into the blood stream. It is transported in the blood (mostly in the form of hydrogen carbonate ions) to the lung. In the lungs the carbon dioxide diffuses into the alveoli to be excreted as we breathe out. Urea is produced by breaking down excess amino acids in the liver. This process is known as deamination. The urea is then passed through the
Premium
salts when reacted with (NH4)2CO3. The principle of periodicity applied to the results of this series of experiments. It helps‚ in trying to see the periodic pattern‚ to know the pattern that results when we do a separation and analysis of all metal ions. PROCEDURE Procedure A 1. 2 drops of 6 M HCl was added to 1 ml of the mixture of the metal cations. 2. The suspension was centrifuged for 1 minute as ppt. of chloride was formed. 3. 1 additional drop of 6 M HCl was added to the clear
Premium Solubility Solid Hydrogen