1 markGroup II Elements
CAPE Chemistry Unit 1 · 2015 · Paper 1 · Question 40
On heating CaSO₄ strongly, it decomposes into CaO(s) and SO₂(g). CaCO₃ decomposes at a much lower temperature than CaSO₄. Which of the following factors BEST explains the greater thermal stability of CaSO₄?
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