2NaOHs的精選

問題詳情：(2017·海南卷)已知：①2NaOH(s)＋CO2(g)===Na2CO3(g)＋H2O(g)ΔH1＝－127.4kJ·mol－1②NaOH(s)＋CO2(g)===NaHCO3(s)ΔH2＝－131.5kJ·mol－1反應2NaHCO3(s)===Na2CO3(s)＋H2O(g)＋CO2(g)的ΔH＝________kJ·mol－1，該反應的平衡常數表達...