Chem 3.3 - p block (3 - group 4 reactions) Flashcards
Terms : Hide Images [1]
| 16000821496 | CO as reducing agent - explanation + equations | C is +2, wants to be +4 so willing to donate CuO + CO -> Cu + CO2 Fe2O3 + 3CO -> 2Fe + 3CO2 | 0 | |
| 16000832885 | Lead (IV) as oxidising agent - explanation + equation | in +4 wants to be +2, so willing to gain electrons PbO2 + 4HCl -> PbCl2 + Cl2 + 2H2O | 1 | |
| 16000851405 | acidic oxies | react with H2O to form acid, is covalent H2O + CO2 -> H2CO3 H2CO3 <-> H+ + HCO3- (hydrogencarbonate ion) HCO3- <-> H+ + CO3- (carbonate ion) | 2 | |
| 16000873031 | amphoteric oxides | react with acids and bases, mainly covalent, some ionic characteristics PbO + 2HNO3 -> Pb(NO3)2 + H2O PbO + H2O + 2NaOH -> Na2[Pb(OH)4] | 3 | |
| 16000884038 | Two chloride examples | carbon tetrachloride (CCl4) silicon tetrachloride (SiCl4) | 4 | |
| 16000891215 | CCl4 reactions w/ water | immiscible (no mix) as C has full outer shell and no d orbital to promote electrons to on same energy level (2) | 5 | |
| 16000896317 | SiCl4 reaction w/ water | violent reaction forming white fumes of HCl rapid hydrolysis takes place as although full outer shell, 3d orbital to promote e to | 6 | |
| 16000906695 | Lead (II) w/ OH- | if little OH-, white ppt forms Pb2+ + 2OH- -> Pb(OH)2 if XS, redissolves to colourless solution Pb(OH)2 + 2OH- -> [Pb(OH)4] 2- | 7 | |
| 16000920322 | Lead (II) w/ Cl- | white ppt, doesn't redissolve in XS Pb2+ + 2Cl- -> PbCl2 | 8 | |
| 16000926073 | Lead (II) w/ I- | bright yellow ppt Pb2+ + 2I- -> PbI2 | 9 |