This page looks at the effect of heat on the carbonates and nitrates of the Group 2 elements - beryllium, magnesium, calcium, strontium and barium. It describes and explains how the thermal stability of the compounds changes as you go down the Group.

2023年6月30日 · This page examines at the effect of heat on the carbonates and nitrates of the Group 2 elements (beryllium, magnesium, calcium, strontium and barium). It explains how the thermal stability of the compounds changes down the group.

2025年1月4日 · Thermal decomposition of carbonates. The Group 2 carbonates break down (decompose) when they are heated to form the metal oxide and give off carbon dioxide gas. The general equation for the decomposition of Group 2 carbonates is: XCO 3 (s) XO (s) + CO 2 (g) X = Group 2 element. Going down the group, more heat is needed to break down the carbonates

In summary, the thermal stability of Group 2 carbonates decreases down the group, making them more reactive. This reactivity is due to the weakening of the bond between the metal cation and the carbonate ion, which also affects their solubility in water.

Explain why the thermal stability of Group 2 carbonates decreases down the group. Include the concepts of ionic radius, lattice energy, and polarisation in your answer.

Thermal Stability: The stability of carbonates increases down the group. Beryllium carbonate is the least stable and decomposes more easily, while barium carbonate requires significantly higher temperatures for decomposition.

2025年1月3日 · The general equation for the decomposition of Group 2 nitrates is: X(NO 3) 2 XO + O 2 + 2NO 2. X = Group 2 element. Going down Groups 1 and 2, more heat is needed to break down the carbonate and nitrate ions. The thermal stability of the Group 1 and 2 carbonates and nitrates therefore increases down the group

The smaller ions at the top of the group have a higher charge density (the same charge packed into a smaller volume) and so have more effect on the nearby carbonate ions than the bigger ones at the bottom.

2019年7月12日 · This page examines at the effect of heat on the carbonates and nitrates of the Group 2 elements (beryllium, magnesium, calcium, strontium and barium). It explains how the thermal stability of the compounds changes down the group.

Group 2 carbonates produce carbon dioxide along with the metal oxide which forms as a white powder. As you go down Group 2, more heat is required for this reaction as the ions increase in size and the carbonates increase in thermal stability. metal oxide.