Topic 4 - Group 2 0.0 / 5 ? ChemistryThe Periodic TableASEdexcel Created by: DavidW001Created on: 12-05-19 21:23 Trend in Reactivity down group 2 Increases 1 of 15 Trend in Ionisation Energy down group 2 Decreases 2 of 15 Protective measure for Barium? Cover in oil to prevent oxidisation 3 of 15 Reactions with Oxygen 2M + O2 -> 2MO 4 of 15 Reactions with Chlorine M(s)+ Cl2(g) -> MCl2(s) 5 of 15 Reaction with water M(s) + 2H2O(l)-> M(OH)2 (aq)+ H2 6 of 15 Trend in Hydroxide Solubility Down Group Increases 7 of 15 Trend in Sulfate Solubility Down Group Decreases 8 of 15 Reactions with Group 2 oxides and water SrO(s) + H2O(l) -> Sr(OH)2(aq) 9 of 15 Reaction of Gp 2 with Water Ph of products... Increases (OH ions make solution more alkaline) 10 of 15 Hydroxides reacting with acids are exothermic or endothermic? Exothermic (neutralisation) 11 of 15 Group 2 Carbonates trend in thermal stability down group Decompose with increasing difficulty 12 of 15 Group 1 Carbonates trend in thermal stability down group Only Lithium decomposes (forms metal oxide and CO2) 13 of 15 General formula for group 1 Nitrates decomposition (Except Lithium) 2MNO3 -> 2MNO2 + O2 14 of 15 General formula for group 2 Nitrates decomposition 2M(NO3)2 ->2 MO + 4NO2 + O2 15 of 15
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