问题
选择题
已知复分解反应2CH3COOH+Na2CO3=2CH3COONa+H2O+CO2↑可进行.在常温下,测得相同浓度的下列六种溶液的pH:
溶质 | NaHCO3 | CH3COONa | NaClO | NaCN | Na2CO3 |
pH | 8.6 | 8.8 | 10.3 | 11.1 | 11.6 |
A.CO2+H2O+2NaClO=Na2CO3+2HClO
B.CO2+H2O+NaClO=NaHCO3+HClO
C.CH3COOH+NaCN=CH3COONa+HCN
D.NaClO+CH3COOH=HClO+CH3COONa
答案
答案:A