• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Qualitative AnalysisCalcium chlorideLead nitrateCopper sulphatePotassium sulphateIron chlorideSodium carbonate

Extracts from this document...


Qualitative Analysis In qualitative analysis you test for the substances present but do not attempt to find out the amounts. The first step is to obtain pure samples of the substances to be tested. This involves the separation of the components on mixtures by a physical method. There are quite a few methods: * Evaporation or distillation may be used to remove unwanted liquids from solids or to obtain a pure liquid from one that is contaminated by dissolved solids. * Fractional distillation may be used to separate pure liquids from mixtures * Chromatography may be used to obtain pure solids from solutions containing a number of dissolved solids. There are a number of tests that are carried out on pure substances: * Initial observations * Flame tests * Tests on solutions for presence of ions: Positively charged ions are identified by reacting solutions with alkaline solutions. ...read more.


Put baggage etc well under benches, away from the working area. Inform staff and seek medical attention. Help the person if possible. 1. Nitric acid 2. Sodium hydroxide Corrosive - it could burn the skin. Can be dangerous if it gets in your eyes. Low risk if low concentration is used. Wear safety glasses at all times that the practical is going on. Wear a lab coat to protect you and your clothes. Stand up when doing practical work. Clean up any spillages straight away. In case of contact with skin, wash immediately with plenty of cold water. In case of contact with eyes, rinse immediately for 15 minutes with plenty of cold water and seek medical advice. Silver nitrate Stains. It will stain anything and everything. Low risk if used safely and sensibly Wear safety glasses at all times that the practical is going on. ...read more.


5. If a white solid is formed when barium chloride solution is added then the ions contained in the solution are SO42- ions 6. If a white solid is formed when silver nitrate solution is added then it is Cl- ions Method for testing positively charged ions 1. Results Table Solution Positive ions Negative ions Name of the solution A Pb2+ Not found One of the solutions was lead nitrate B Cu2+ SO42- Copper sulphate C Ca2+ Cl- Calcium chloride D Na+ or K+ CO32- Either sodium carbonate or potassium carbonate. Needs a flame test to find out. E Fe3+ Cl- Iron chloride F Na+ or K+ SO42- Either Sodium sulphate or potassium sulphate. Needs a flame test to find out. For solution D and solution F I had to do a flame test. Solution D went yellow so therefore it indicates that it is sodium carbonate. Solution F went lilac therefore it indicates that it is potassium sulphate. ?? ?? ?? ?? ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Aqueous Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Aqueous Chemistry essays

  1. Free essay

    Investigation of aqueous electrolytic cells.For this experiment, we are to test an aqueous solution, ...

    Data Table: Mass of Electrode Voltage Time Beginning Mass: 2.93 Temperature(�C) 1 2 3 Average 2 3 2.95 2.96 2.95 2.95 20.5 4 3 3.04 3.02 3.03 3.03 20.5 6 3 3.11 3.13 3.12 3.12 21 8 3 3.28 3.24 3.23 3.25 23 10 3 3.32 3.32 3.32 3.32 24 12 3 3.55 3.52 3.53 3.53 25 Data Processing: (Results)

  2. Determining the purity of Iron Wool.

    METHOD: 3.50g (approx.) of Sodium Carbonate crystals should be weighted out and deposited into a 250cm3 volumetric flask with 100cm3 deionised water. Crystals should then be fully dissolved and solution made up to the 250cm3 shaking thoroughly with a stopped in place.

  1. Investigating the Effects of Increasing Copper Sulphate Solution Concentrations on the Germination of Cress ...

    By mixing the solution as it is made, it means that the solutions will not have all the copper sulphate at the top or bottom, the whole thing will diffuse quicker. This batch can be used as a control as it has no copper sulphate in it.

  2. Comparing the solubility's of copper sulphate, sodium chloride and potassium nitrate.

    Polarity - Generally only polar solute molecules will dissolve in polar solvents and only non-polar solute molecules will dissolve in non-polar solvents. Polar solute molecules have positive and negative ends. So if a polar solute molecule is placed in a polar solvent then the positive ends of solvent molecules will attract the negative ends of solute molecules.

  1. Find the solubility of potassium nitrate in water at different temperatures and to estimate ...

    Altogether I will repeat the process 4 more times so that I have a set of 5 results. Results The results I gained from the experiment are shown in the table below. Mass of potassium nitrate in the saturated solution /g Volume of water in the saturated solution /cm� Temperature

  2. How much Iron (II) in 100 grams of Spinach Oleracea?

    In order to dilute down the Iron (II) Ammonium Sulphate (aq) into various solutions of different concentrations a certain amount had to be removed from the original solution and placed in a volumetric flask, which was filled up to the graduation mark with Sulphuric Acid (aq).

  1. Precipitation, silver chloride, silver nitrate and sodium chloride.

    I used a glass rod to sir the solution. I saw a precipitate of solid crystals of silver chloride. Then I added sodium chloride solution still in the measuring cylinder slowly until no more precipitate formed. I wrote my name on the piece of filter paper so I would know it was mine.

  2. Preparing a solution of sodium Chloride

    I then added some distilled water and stirred with a glass rod until the solution was not saturated 5. I then transferred the solution into a 250cm� volumetric flask. 6. I then rinsed out the beaker and glass rod into the flask to make sure there was no sodium chloride left in the beaker or on the glass rod.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work