Zusammenfassung der Ressource
C3
- Qualitative analysis
- Analysing substances
- Blood tests
- Carried out to monitor patients general health
- Can also be used to diagnose diseases
- measuring cholesterol in blood - diagnose heart disease
- alcohol content of a drivers blood
- Testing for ions
- calcium, Ca2+
- White precipitate
- Ca2+(aq) + 2OH- (aq) --> Ca(OH)2 (s)
- Copper(ll) Cu2+
- Blue precipitate
- Cu2+ (aq) + 2OH- (aq) ---> Cu(OH)2 (s)
- Iron(ll) Fe2+
- Green precipitate
- Fe2+ (aq) + 2OH- (aq) --> Fe(OH)2 (s)
- Iron(lll)Fe3+
- Brown precipitate
- Fe3+ (aq) + 3OH- (aq) --> Fe(OH)3 (s)
- Aluminium Al3+
- White precipitate then redissolves in excess NaOH to form colourless solution
- Al3+ (aq) + 3OH- (aq) -->Al(OH)3 (s)
- Then
- Al (OH)3 (s) + OH-(aq) --> Al (OH)-4 (aq)
- Qualitative analysis tells you WHAT is present
- Could mean doing tests
- To work out the identity of a mystery substance
- Lots of substances are made up of different bits
- EG- ionic substances all have a positive bit and a negative bit
- Ionic reactions
- Quantitative analysis
- Measuring
amounts
- solutions and
concentrations
- Hard
Water
- Titrations
- Preparing soluble
salts
- Electrolytic processes
- Electrolysis of molten substances
- Electrolysis of solutions
- Electrolysis of copper electrodes
- Electroplating
- Gases,reversible reactions and ammonia
- Calculating volumes
- Reversible reactions
- The haber process
- Organic chemistry
- Homologous series
- Production of ethanol
- Production and issues of ethanol
- Ethene and ethanoic acids
- Esters
- Uses of Esters