Purpose: The purpose of this lab is to identify the presence of cations and anions in four unknown solutions by identifying whether they are copper‚ silver‚ iron‚ or chloride ions which is done by adding sodium hydroxide‚ solid copper‚ silver nitrate‚ and potassium thiocyanate to the solutions and analyzing the chemical reactions. Introduction: Chemical change‚ unlike physical change is the change in the composition of a substance rather than simply its shape‚ size‚ or state (Marie‚ 2015). Signs
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iLab‚ Week #2 CATIONS AND ANION LAB Introduction In this experiment we will be mixing two ionic compounds: potassium chromate and lead nitrate; both are soluble in water. This will be demonstrating a double-replacement reaction/reactions between cations and anions. If a reaction does occur it will form a precipitate due to one of the newly formed compounds not being soluble in water. Once the experiment was completed there was what appears to be a “solid” substance remaining in the
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Qualitative Analysis-Part 2 Anions September 18th‚ 2013 Submitted to: Ron Submitted by: Chris Lab Partner: Neil Objective: Using qualitative analysis we will run a series of experiments to test for negative anions in different solutions. Rational: These experiments will allow detection of anions in a given solution. Method: CO3 Solution Iodine Solution 6M Nitric Acid SO4 Solution Sulphric Acid(H2SO4) Chloride Solution 6M Asetic Acid(CH3COOH) Barrium
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LAB 3: QUALITATIVE ANALYSIS Part 2- ANIONS Sameera Feroz Butt Lab Partner: Ram Soni Thursday January 30‚ 2014 Leilani Morales CHEM1131-02 OBJECTIVE The objective of this experiment was to use qualitative analysis to determine the chemical characteristics of four known anions by systemic confirmatory testing. The chemical characteristics observed were to be used to identify an unknown sample. Sulphuric acid was to be added to a carbonate solution and an effervescent reaction would
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Chemistry 112: Anion Analysis Page 7 ANION ANALYSIS M uch of the work you will be doing in the Chemistry 112 laboratory will be concerned with identifying positive and negative ions‚ that is‚ cations and anions‚ in solutions whose composition is unknown. This procedure is called QUALITATIVE ANALYSIS. The modern chemist frequently wishes to identify the constituents in a very small amount of substance‚ and so he depends heavily on instrumental methods of analysis. While the procedures
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Analysis of Anions Analysis of Solutions Containing the Ions Cl-‚ Br-‚ l-‚ SO42-‚ CO32-‚ and NO3- This experiment continues the qualitative analysis begun in Experiment 19. Here we will be analyzing solutions to determine the presence of anions. The same techniques that were used for the cation analysis must be used for the anions. If you have not carried out Experiment 19‚ read the introductory section before starting this experiment. The major difference between cation and anion analysis
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PROJECT IN CHEM LAB. Submitted by: BHEA MARIE MENDOZA Submitted to: -CATIONS and ANIONS- Cations are positive charged ions. A cation has fewer electrons than protons. Anions are negatively charged ions. An anion has more electron than protons. The nature and magnitude of charge on ion depend on the position of an element in the periodic table. In forming an ion‚ an atom of a main group element loses gains electrons to obtain the electronic configuration of the noble gas
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Task 3: Tests for Anions: An Anion is an atom which is negatively charged therefore indicating a larger amount of electrons than proteins. Overall the tests for anions were mainly conclusive however 6 out of 8 of the anions we were testing for could only be determined from one specific result for example if a black precipitate formed following the tests the substance is therefore a sulphide however the same result would also show the presence of carbonate and hydrogen carbonate this therefore
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Confirmatory Tests for Cations & Anions prepared by alex teoh / Update: 29 Dec 2004-2205 h / 1st pub: 7 Sep 2001 @ CHIJ-St Joseph’s Convent Test for CATions * All cations must be present in aqueous states before tests can be conducted.. CATion ammonium zinc Reaction with aqueous Sodium Hydroxide NO ppt. Ammonia gas produced on warming. White ppt. [y] Soluble in excess aq. NaOH to form a colorless solution. [z] Zn2+ + 2OH- Zn(OH)2 (white ppt) Zn(OH)2 + 2OH- [Zn(OH)4]2- (aq) White ppt
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Qualitative Anion Tests PURPOSE: The purpose of this experiment is to identify some commonly occurring anions & to study some of the reactions used for their identification. PROCEDURE: You must first determine to which of the three groups the various anions belong. Since no two people observe the same event in exactly the same way it is important to also conduct specific confirmation tests on the known samples of each anion. This information will help identify the anion present in
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