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. However, sulphates of alkaline earth metals show varied trends. So, solubility should decrease from Li to Cs. The stability of carbonates and bicarbonates increases down the group. From Li to Cs, due to larger ion size, hydration enthalpy decreases. MO + H 2 SO 4 ———–> MSO 4 + H 2 O. All the bicarbonates (except which exits in solution) exist … Thermal stability: - Carbonates: - The carbonates of alkali metals except lithium carbonate are stable towards heat. Alkali metal carbonates and bicarbonates are highly stable towards heat and their Alkali metals constitute the 1 group in periodic table. 11 $\begingroup$ Why is it that thermal stability of alkali metal hydrides decreases down the group, but for carbonates, it increases? Sulphates. (a) Nitrates (b) Carbonates (c) Sulphates. 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. Therefore they are used as ... bicarbonates, sulphates, nitrates, etc. Thermal stability of alkali metal hydrides and carbonates. Solution : (i) Nitrates Thermal stabilityNitrates of alkali metals, except , decompose on strong heating to form nitrites. M + H 2 SO 4 ——> MSO 4 + H 2. Properties. The carbonates of alkaline earth metals and Lithium carbonate decompose on heating to form oxides with the evolution of CO2. 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 is the decomposition of a compound on heating. Compare the solubility and thermal stability of the following compounds of the alkali metals with those of the alkaline earth metals. Soluble. Answer : Nitrates , carbonates and sulphates of Alkali metals are soluble in water . thermal stability decreases and heat of formation decreases down the group. The sulphates of alkaline earth metal are prepared by the action of sulphuric acid on metals, metal oxides ,hydroxides and carbonates. Sulphates of alkali metals are soluble in water. From Li to Cs, thermal stability of carbonates increases. 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 Active 12 months ago. Fairly soluble. Hydrides liberate hydrogen at anode on electrolysis. Insoluble. Li 2 CO 3 → Li 2 O +CO 2 MgCO 3 → MgO + CO 2 Na 2 CO 3 → No action Thermal stability of alkali metal hydrides and carbonates (1 answer) Closed 1 year ago. 1) The sulphate of alkaline earth metal are all white solids. Insoluble.

As we move down group 1 and group 2, the thermal stability of nitrate increases. In group1,it is found that the thermal stability of hydroxides,carbonates,nitrates sulphates etc. Ask Question Asked 3 years, 3 months ago. The higher the temperature required to decompose something, the more thermally stable it will be. Viewed 12k times 12. Like alkali metals, these are s-block elements, and have two electrons in the valence shell in s-orbital. Sparingly soluble. Thermal stability. But, experimentally, order is reverse.