题目:
等体积等物质的量浓度的NaHCO3溶液和Ba(OH)2溶液混合,离子方程式正确的是
A. HCO3-+ H+="=" H2O +CO32-
B. 2HCO3-+ Ba(OH)2 ="=" BaCO3↓+2H2O +CO32-
C. HCO3-+ Ba2+ + OH-="=" H2O + BaCO3↓
D. 2HCO3-+ Ba2+ +2OH-="=" BaCO3↓+2H2O+CO32-
答案:
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