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As we move down group 1 and group 2, the thermal stability of nitrate increases. Viewed 12k times 12. The sulphates of alkaline earth metal are prepared by the action of sulphuric acid on metals, metal oxides ,hydroxides and carbonates. Insoluble. From Li to Cs, due to larger ion size, hydration enthalpy decreases. Insoluble. Sulphates of both group 1 and group 2 metals are stable towards heat.

, on decomposition, gives oxide.

Similar to lithium nitrate, alkaline earth metal nitrates also decompose to give oxides. thermal stability decreases and heat of formation decreases down the group. However, sulphates of alkaline earth metals show varied trends. Thermal Stability is the decomposition of a compound on heating. Sulphates of alkali metals are soluble in water. But, experimentally, order is reverse. Ask Question Asked 3 years, 3 months ago. Thermal stability of alkali metal hydrides and carbonates. Alkali metal carbonates and bicarbonates are highly stable towards heat and their The thermal stability of carbonates increases with the increasing basic strength of metal hydroxides on moving down the group.Thus the order is The bicarbonates of all the alkali metals are known. Properties. 11 $\begingroup$ Why is it that thermal stability of alkali metal hydrides decreases down the group, but for carbonates, it increases? Compare the solubility and thermal stability of the following compounds of the alkali metals with those of the alkaline earth metals. Answer : Nitrates , carbonates and sulphates of Alkali metals are soluble in water . The stability of carbonates and bicarbonates increases down the group. Thermal stability of alkali metal hydrides and carbonates (1 answer) Closed 1 year ago. So, solubility should decrease from Li to Cs. Li 2 CO 3 → Li 2 O +CO 2 MgCO 3 → MgO + CO 2 Na 2 CO 3 → No action Soluble. In group1,it is found that the thermal stability of hydroxides,carbonates,nitrates sulphates etc. Contents Foreword Preface Thesulfates A.Introduction B.Phasetransitions C.Density D.Decompositionequilibria E.Kineticsofthermaldecomposition Units,symbols,andabbreviations SO 3,SO 2,andO 2 Aluminum Americium Antimony Barium Beryllium Bismuth Cadmium Calcium Cerium Cesium Chromium Cobalt Sparingly soluble. MO + H 2 SO 4 ———–> MSO 4 + H 2 O. All the bicarbonates (except which exits in solution) exist … The higher the temperature required to decompose something, the more thermally stable it will be. Solubility. (a) Nitrates (b) Carbonates (c) Sulphates. 1) The sulphate of alkaline earth metal are all white solids. The carbonates of alkaline earth metals and Lithium carbonate decompose on heating to form oxides with the evolution of CO2. The Nuffield Data Book quotes anyhydrous beryllium sulfate, BeSO 4, as insoluble, whereas the hydrated form, BeSO 4.4H 2 O is soluble, with a solubility of about 39 g of BeSO 4 per 100 g of water at room temperature. Thermal stability. Hydrides liberate hydrogen at anode on electrolysis. M + H 2 SO 4 ——> MSO 4 + H 2. From Li to Cs, thermal stability of carbonates increases. Solution : (i) Nitrates Thermal stabilityNitrates of alkali metals, except , decompose on strong heating to form nitrites. Sulphates. 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