Question
Which of the following compounds is thermodynamically is the most stable?
BITSAT
Chemistry
s Block Elements
2022
BITSAT 2022
BITSAT Chemistry Question (2022) — Solution
Options
- A. BaCO _3
- B. MgCO _3
- C. SrCO _3
- D. CaCO _3
Answer
A. BaCO _3
Step-by-step solution
The thermal stability of carbonates increases down the group. So, the order of thermal stability of carbonates of alkaline earth metals is BaCO _3> CaCO _3> MgCO _3> BeCO _3 . Therefore, BaCO _3 is thermodynamically most stable and BeCO _3 is least stable.
Related: Chemistry — s Block Elements · All PYQ Banks