问题 选择题

下列反应与相应说法不正确的是[ ]

A. SiO2+2NaOH=Na2SiO3+H2O,说明SiO2是酸性氧化物

B. SiO2+2CSi+2CO↑,体现了SiO2的弱氧化性

C. SiO2+Na2CO3Na2SiO3+CO2↑,体现了SiO2高沸点的性质

D. SiO2+4HF=SiF4↑+2H2O,说明了SiO2具有碱性

答案

答案:D

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