When an alkaline earth carbonate is heated, it releases CO₂, leaving the metal oxide. The temperature at which each Group 2A(2) carbonate yields a CO₂ partial pressure of 1 atm isCarbonate Temperature (°C)MgCO₃ 542CaCO₃ 882SrCO₃ 1155BaCO₃ 1360(a) Suggest a reason for this trend.