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

Investigation on the "labels on bottles" (Ions testing).

Extracts from this document...

Introduction

Investigation on the "labels on bottles" (Ions testing) Planning: * There are many ways in which to find out what ions are contained in different compounds. When substance is mixed to make solution, precipitation reactions and reactions with gas specifically are very useful to help us out with identifying which ions are contains in the substances. This test is for negative ions. * Ions can also be identified in a test called "Flame test". Compounds give of different colours when put into flame; a certain ion gives off a certain colour for example when potassium ion is burned, a beautiful calm lilac colour is given off and when sodium ion is burned a bright yellow colour is given off. This way we can identify which ions are present in the compounds. This test is for positive ions. ...read more.

Middle

HCL and placed above blue flame to clean the chrome wire. Repeat this procedure until you observe the nichrome wire is clean (when purely iron colour from the nichrome wire is given off). Once wire has cooled, dipped it in dilute hydrochloric acid and placed it in the bottle 1 until nichrome wire's end is covered with the compound. The wire will then be held at the edge of the blue flame, and the flame colour will be observed. Through preliminary work I have got results which tells me what colour contain which ions. Na+ = yellow K+ = lilac Cu2+ = Green Fe2+ = Blue/Green Results: Bottle "A" = Yellow = Na+ Bottle "B" = Lilac = K+ Bottle "C" = Green = Cu2+ At normal: Compound "A": Compound "B": Compound "C": Observations: It is most likely for Compound "a" to contain Sodium ions because the flame given off was bright yellow/orange when put to Bunsen flame; there for we assume it is Sodium chloride. ...read more.

Conclusion

Equipment * 2 Test tube * testube rack * delivery tube * bung * lime water * Substance "c" * Dilute hydrochloric acid Safety * Wear jacket and goggles for it may have a vigorous reaction, * keep away from your body * do not look over the test tubes Method: For carbonate ions; Dilute HCL will be poured into a testube with a finger size amount of Substance "C", immediately it should be covered with a bung, connected to another test tube with limewater, the compound should react giving off a gas, which should change the lime water to a cloudy form. Results: We did not have enough lime water there for nothing much really happened to the lime water therefore we are trying another procedure. Method: Observations: Fortunately the red litmus paper did go blue this means that substance "c" contained CO2 and due to the presence of CO2 the red litmus paper turned blue and therefore this means the substance had a carbonate (negative ion). There fore it is a Copper Carbonate. ...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. How much Iron (II) in 100 grams of Spinach Oleracea?

    present in 100 grams of Spinach. This is not the expected result of 4 mg's, which is what the many textbooks suggest the answer should be. It is also lightly less than the previous experiment and this could be due to the higher concentration of Potassium Manganate (VII)

  2. Organic compound identification.

    2. After adding PCl5 to the boiling tube and warming it there was a sudden reaction and a gas was given off. The test tube got a layer of burned black substance on its outside. Testing the gas with the stopper from the concentrated ammonia bottle gave white fumes.

  1. Science Coursework Investigation ions

    chemicals � Care when returning all used glassware and equipment at the end of the experiment First of all we need to check that we have all the equipment required for the experiment and after doing this we carefully set up the apparatus as shown and check that everything is in the rite order and working properly.

  2. To find the resistance of wire.

    This will cause more collisions and so the rate of reaction will be increased. In my experiment Hydrochloric Acid (liquid)(HCl) is going to react with Marble Chips (solid)(CaCO3) to make Calcium Chloride (liquid)(CaCl2), Water (liquid)(H2O) and Carbondioxide (gas)(CO2): CaCO3 + 2HCl CaCl2 + H2O + CO2 In this reaction energy

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