C2f-h notes

Seite 1

C2f - acid and bases

Neutralisation - pH7

acid + base = salt + water

(hydrophilic acid + potassium = potassium + water)

Bases = oxides + hydroxides of metals

solubles = alkalies

C2f - fertilisers and crop yeild

Fertilisers - nitrogen

- phosphorus

- potassium

Alkali + acid (rod) + pH7 + evaporation + filter slowly = crystals

Eutrophication

fertilisers wash into lakes. Increases nitrates + phosphates (increases growth in algae)

algai blocks sunlight (plants die and rot)

increase in aerobic bacteria. Uses up oxygen (cant support organisms = fish die and go to heaven)

C2h - Sodium Chloride

sodium chloride is table salt

Electrolytes of concentrated sodium chloride solution, cathode + anodes!

Test for chlorine

- Bleached paper

C2f

C2g

C2h