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

Investigation 5 Flame Tests

Extracts from this document...


Investigation 5 Flame Tests ?Aim? Know the unknown solution by use flame test based on its characteristic color. ?Safety? Wear safety goggles and follow the standard safety procedure as outlined. Don't touch the end of the wire loop used in the flame tests. This wire gets extremely hot and can cause severe burns. ?Background? Each of the cation in different salt solutions,will make different flame color. The flame test is a qualitative test used in chemistry to help determine the identity or possible identity of a metal salt based on the characteristic color the salt turns the flame of a Bunsen burner or metalloid ion found in an ionic compound. ...read more.


wire 0.1M NaCl Droppers Tongs 0.1M CaCl2 Bunsen burner 6M HCl 0.1M BaCl2 0.1M KCl Unknown solution ?Method? 1) Each of 5 test tubes with the name of a salt solution was labeled; then the sixth tube unknown was labeled. 1ml of each salt solution was added to the appropriately labeled test tube. 2) One end of the nichrome wire was grasped with the tongs. The wire was cleaned by alternately heating it in the hot burner flame and dipping it into the hydrochloric acid. ...read more.


The color of the flame was noted and unknown substance was identified. ?Data Collection? Salt Solution Color of the flame CuCl2 green LiCl red NaCl Yellow CaCl2 brick red BaCl2 yellow-green Unknown purple ?Processing? We need use purple filter to see KCl and unknown solution. ?Conclusion and evaluation? From the data collection we can know that: Li compound has red color, Na compound has yellow color, Ca compound has brick red color, Cu compound has green color, Ba compound has yellow color and the unknown substance has K+ cation. We should let Bunsen burner's flame near colorless. Nichrome (Ni-Cr) wire should wash cleanlily, or it will influence next solution's flame color. ?? ?? ?? ?? 2 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate 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 International Baccalaureate Chemistry essays

  1. Lab Report - Flame Test

    * Place the nichrome wire with the metal salt in the bunsen burner and observe the colour of the flame that is produced. View the flames through a spectrometer and through cobalt glass. * Record the reading. Repeat the whole process from the cleaning of the nichrome wire till the recording of the reading with the next metal salt.

  2. Absorbance of light by a transition metal complex investigation

    Therefore, in conclusion, my hypothesis corresponds with the results: the relationship between red absorbance and concentration of hexaaquanickel(II) ions is quite clear - as the concentration increases, the red absorbance also increases.

  1. Identification of Elements: Flame Test

    But there is a very high chance that unknown A contains calcium. Unknown B could be potassium chloride since both of them has a pink and orange flame. Although potassium nitrate too has a pink and orange flame, but its powders did not seemed to be as fine as that of unknown B and potassium chloride.

  2. Using Solubility Rules to Indentify Unknown Solutions

    --> XS(aq)+ PY(s) = X++Y-+ P++ S- --> XS(aq)+ PY (s) = P+(aq) + Y-(aq) --> PY (s) = P(aq) + Y(aq) --> PY(s) E = NaOH + MgCl2 =NaOH(aq)+MgCl2(aq)-->NaCl(aq)+MgOH2 (s) = Na++OH-+Mg2++Cl--->NaCl(aq)+MgOH2(s) = Mg2+(aq) + OH-(aq) --> MgOH2 (s)

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