Bài làm :
$\begin{array}{|c|c|}\hline \text{CTHH}&\text{Gọi tên}&\text{Phân loại} \\\hline K_2O&\text{Kali oxit}&\text{Oxit bazơ}\\\hline HCl&\text{Axit clohiđric}&\text{Axit}\\\hline KOH&\text{Kali hiđroxit}&\text{Bazơ}\\\hline BaSO_4&\text{Bari sunfat}&\text{Muối trung hoà}\\\hline H_2SO_4&\text{Axit sunfuric}&\text{Axit}\\\hline Ca(OH)_2&\text{Canxi hiđroxit}&\text{Bazơ}\\\hline KHCO_3&\text{Kali hiđrocacbonat}&\text{Muối axit}\\\hline P_2O_5&\text{Điphotpho pentaoxit}&\text{Oxit axit}\\\hline Fe(OH)_3&\text{Sắt (III) hiđroxit}&\text{Bazơ }\\\hline\end{array}$