Carbonates (C13) Flashcards
(5 cards)
1
Q
What is manufactured
A
Lime by limestone through heating
CaCo3 + heat -> CaO + Co2
2
Q
What are 3 uses of quick lime
A
Making steel from iron
Neutralise acidity in soil
Drying agent in industry
3
Q
Name 2 uses of slaked lime
A
Neutralise acidity in soil, lakes affected by acid rain
Neutralising acidic industrial waste products (flue gas desulphurisation)
4
Q
Name 2 uses of limestone
A
Making cement: mixing limestone with clay, heating mixture, adding gypsum (calcium sulphate), grinding up the final solid to give powder
Making iron from iron ore: limestone reacts with sand forming slag (calcium silicate), used for road building
5
Q
What is thermal decomposition
A
Chemical decomposition caused by heat
Breaking up of large molecules into smaller ones by the action of heat
