标准状下,将3.36L CO2气体通入200mL1.00mol/L NaOH溶液中,充分反应后溶液中c(CO32-)与c(HCO3-)的比值为( )
A. 1:1
B. 1:2
C. 2:1
D. 1:3
人气:260 ℃ 时间:2020-01-28 04:54:47
解答
n(OH-)=0.2L×1.0mol/L=0.2mol,3.36LCO2气体的物质的量是3.36L22.4L/mol=0.15mol.n(OH-):n(CO2)=0.2mol:0.15mol=4:3,总反应的离子方程式为:4OH-+3CO2=CO32-+2HCO3-+H2O,由离子方程式可知:n(CO32-)...
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