Đáp án + Giải thích các bước giải:

`-KOH(`base`):` Potassium hydroxide

`-H_2SO_4(`acid`):`Sulfuric acid

`-SO_2(`oxide acid`):`Sulfur dioxide

`-Na_2HPO_4(`muối`):`Sodium hydrogenphosphate

`***` Oxit Axit:$\\$ $\rm SO_2$: sulfur dioxide $\\$`***` Axit:$\\$ $\rm H_2SO_4$:sulfuric acid $\\$`***` Bazo:$\\$ $\rm KOH$: pottasium hydroxide$\\$`***` Muối: $\\$ $\rm Na_2HPO_4$: Natri Dihydrogenophosphat