Titreringer

Question 1

Redoks (per)

Answer 1

MnO(4 -) + 5Fe(2+) + 8H(+) -> Mn(2+) + 5Fe(3+) + 4H(2)O
[selv indikerende, rosa]

Question 2

Redoks (tio)

Answer 2

2S(2)O(3 2-) + I(2) -> S(4)O(6 2-) + 2I(-)
[stivelse]

Question 3

Fellingsreaksjon (fosfat)

Answer 3

Ag(+) + Cl(-) -> AgCl(s)
xHPO(4 2-) (s) -> x + HPO(4 2-) (aq)
HPO(4 2-) + H(2)O <-> H(3)O(+) + PO(4 3-)
3Ag(+) + PO(4 3-) -> Ag(3)PO(4) (s)

Question 4

Komplekstitrering

Answer 4

Ca(2+) + H(2)A(2-) <-> CaA + 2H(+)

Question 5

Tilbaketitrering

Answer 5

CaCO(3) (s) + 2HCl (aq) -> Ca(2+) + 2Cl(-) + H(2)O + CO(2) (g)

Question 6

Indirekte

Answer 6

2Cu(2+) + 4I(-) -> 2CuI + I(2)
2S(2)O(3 2-) + I(2) -> S(4)O(6 2-) + 2I(-)

OCl(-) + 2I(-) + 2H(+) -> I(2) + Cl(-) + H(2)O
2Na(2)S(2)O(3) + I(2) -> 2NaI + Na(2)S(4)O(6)

Question 7

Fellingstitrering (kromat)

Answer 7

AgNO(3)(aq) + Cl(-)(aq) -> AgCl(s) + NO(3 -)(aq)
AgNO(3)(aq) + K(2)CrO(4) -> Ag(2)CrO(4)(s) + KNO(3)