Active 12 months ago. Viewed 12k times 12. Therefore they are used as ... bicarbonates, sulphates, nitrates, etc.

As we move down group 1 and group 2, the thermal stability of nitrate increases. The higher the temperature required to decompose something, the more thermally stable it will be. Insoluble. Compare the solubility and thermal stability of the following compounds of the alkali metals with those of the alkaline earth metals.

, on decomposition, gives oxide.

Similar to lithium nitrate, alkaline earth metal nitrates also decompose to give oxides. So, solubility should decrease from Li to Cs. (a) Nitrates (b) Carbonates (c) Sulphates. 11 $\begingroup$ Why is it that thermal stability of alkali metal hydrides decreases down the group, but for carbonates, it increases? Solution : (i) Nitrates Thermal stabilityNitrates of alkali metals, except , decompose on strong heating to form nitrites. Soluble. Alkali metal carbonates and bicarbonates are highly stable towards heat and their The stability of carbonates and bicarbonates increases down the group. Like alkali metals, these are s-block elements, and have two electrons in the valence shell in s-orbital. Thermal Stability is the decomposition of a compound on heating. In group1,it is found that the thermal stability of hydroxides,carbonates,nitrates sulphates etc. MO + H 2 SO 4 ———–> MSO 4 + H 2 O. Thermal stability. From Li to Cs, due to larger ion size, hydration enthalpy decreases. However, sulphates of alkaline earth metals show varied trends. Fairly soluble. Li 2 CO 3 → Li 2 O +CO 2 MgCO 3 → MgO + CO 2 Na 2 CO 3 → No action The sulphates of alkaline earth metal are prepared by the action of sulphuric acid on metals, metal oxides ,hydroxides and carbonates. Sulphates of both group 1 and group 2 metals are stable towards heat. Insoluble. Thermal stability of alkali metal hydrides and carbonates. Sulphates. thermal stability decreases and heat of formation decreases down the group. 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. Ask Question Asked 3 years, 3 months ago. Solubility. 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. Thermal stability of alkali metal hydrides and carbonates (1 answer) Closed 1 year ago. Hydrides liberate hydrogen at anode on electrolysis. Sulphates of alkali metals are soluble in water. All the bicarbonates (except which exits in solution) exist … Thermal stability: - Carbonates: - The carbonates of alkali metals except lithium carbonate are stable towards heat. Properties. Answer : Nitrates , carbonates and sulphates of Alkali metals are soluble in water . But, experimentally, order is reverse. Alkali metals constitute the 1 group in periodic table. M + H 2 SO 4 ——> MSO 4 + H 2. 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