Thermal Stability is the decomposition of a compound on heating. So, solubility should decrease from Li to Cs. Active 12 months ago. Sulphates. Ask Question Asked 3 years, 3 months ago. Fairly soluble. Compare the solubility and thermal stability of the following compounds of the alkali metals with those of the alkaline earth metals. The higher the temperature required to decompose something, the more thermally stable it will be. Thermal stability of alkali metal hydrides and carbonates. The sulphates of alkaline earth metal are prepared by the action of sulphuric acid on metals, metal oxides ,hydroxides and carbonates.

As we move down group 1 and group 2, the thermal stability of nitrate increases. 11 $\begingroup$ Why is it that thermal stability of alkali metal hydrides decreases down the group, but for carbonates, it increases? Sulphates of both group 1 and group 2 metals are stable towards heat. Properties. Soluble. Thermal stability of alkali metal hydrides and carbonates (1 answer) Closed 1 year ago. All the bicarbonates (except which exits in solution) exist … 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. From Li to Cs, thermal stability of carbonates increases. In group1,it is found that the thermal stability of hydroxides,carbonates,nitrates sulphates etc. From Li to Cs, due to larger ion size, hydration enthalpy decreases. Therefore they are used as ... bicarbonates, sulphates, nitrates, etc. MO + H 2 SO 4 ———–> MSO 4 + H 2 O. Answer : Nitrates , carbonates and sulphates of Alkali metals are soluble in water . Viewed 12k times 12. Li 2 CO 3 → Li 2 O +CO 2 MgCO 3 → MgO + CO 2 Na 2 CO 3 → No action (a) Nitrates (b) Carbonates (c) Sulphates. Insoluble. But, experimentally, order is reverse. 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. Thermal stability. The stability of carbonates and bicarbonates increases down the group. However, sulphates of alkaline earth metals show varied trends. thermal stability decreases and heat of formation decreases down the group. Alkali metal carbonates and bicarbonates are highly stable towards heat and their Sparingly soluble. 1) The sulphate of alkaline earth metal are all white solids. Alkali metals constitute the 1 group in periodic table. 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 Insoluble. Like alkali metals, these are s-block elements, and have two electrons in the valence shell in s-orbital. The carbonates of alkaline earth metals and Lithium carbonate decompose on heating to form oxides with the evolution of CO2. Hydrides liberate hydrogen at anode on electrolysis. M + H 2 SO 4 ——> MSO 4 + H 2. Solubility. Thermal stability: - Carbonates: - The carbonates of alkali metals except lithium carbonate are stable towards heat. Solution : (i) Nitrates Thermal stabilityNitrates of alkali metals, except , decompose on strong heating to form nitrites. Sulphates of alkali metals are soluble in water.

, on decomposition, gives oxide.

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