9-Co,Rh,Ir (VIII skupina) in vse ostalo do konca

Question 1

Co in F

Answer 1

Co + 3 F → CoF3 (500°C)

Question 2

Co in halogeni

Answer 2

Cl2, Br2, I2 + Co → CoX2

Question 3

Žlahtne kovine se topijo v zlatotopki (mešanica HNO3 in HCl 1:3)

Answer 3

Pt + 2 KCl + 2 HNO3 + 6 HCl → K2PtCl6 + 2 NOCl + 4 H2O

Question 4

PdCl22H2O in CuCl22H2O uporabimo kot detektor za CO

Answer 4

PdCl2*2H2O + CO → Pd + CO2 + 2 HCl + H2O (nosilec potemni)

Pd + 2 CuCl2H2O → PdCl22H2O + 2 CuCl

regeneracija (s HCl):
4 CuCl + O2 + 4 HCl → 4 CuCl2 + 2 H2O

Question 5

Pt(H2O)4 ioni - nastanek

Answer 5

K2[PtCl4] + AgClO4 →

Question 6

priprava H2[PtCl6]

Answer 6

Pt + 2 HNO3 + & HCl + 2 HCl → H2[PtCl6] + 2 NOCl + 4 H2O

Question 7

pridobivanje Cu

Answer 7

4 CuFeS2(s) + 9 O2(g) → 2 Cu2S(s) + 2 Fe2O3(s) + 6 SO2(g)

Fe2O3(s) + 3 SiO2(s) → Fe2(SiO3)3(s)

2 Cu2S(s) + 3 O2(g) → 2 Cu2O(s) + 2 SO2(g)

Cu2S(s) + 2 Cu2O(s) → 6 Cu(s) + SO2(g)

Question 8

Zn reagira s kislinami in hidroksidi

Answer 8

Zn + H2SO4 → ZnSO4 + H2

Zn + 2 NaOH + 2 H2O → Na2Zn(OH)4+ H2