Qualitative Analysis Essay

soft is where the results give a work that you retain to match up to a colour chart, or attain you reach done to see if it is substantiating or negative with a description of what a positive reply should look like. This examen is less reliable as almost colour or positive reaction look similar to each another(prenominal) or the same but by adding variant chemicals. An example of qualitative would be a pH discharge as the result gives you a colour and thus you have to match it up to the pH scale to overhear you final result. Qualitative analysis is used to find off different ion in a presumption sample. This also analytical chemistry technique, this psychometric testing method uses many different tests to get a reaction that would link with different ions. IonsAn Ion is an electrically aerated particles that argon form when atoms are added or taken air. admixture atoms have positively superaerated ions and non- coat atoms have negatively charged ions. To work is sue how many ions a metal and non-metal should have is simple. Metals should have the same amount of charged ions as the assembly number they are in for example a metal in group 2 exit have two positively charged ions. Non-metals should have the same amount of charged ions as the group number they are in but minus eight-spot for example a non-metal in group 5 would have 3 negatively charged ions.Negative ions are called anions and positive ions are called cations. When testing for cations/metals you could use a flame test this is the simplest and quickest way of test for cations another way that you could test for cations is a sodium hydrated oxide test this test consist of adding sodium hydroxide to test compound when coloured pass is formed them stop adding the sodium hydroxide and see what the cation is by using the send back below, this table show what colour the light is and any further results.