#
H_{2}SO_{3} + 2 KOH → K_{2}SO_{3} + 2 H_{2}O

This is an **acid-base** reaction (neutralization): **H _{2}SO_{3}** is an

*acid*,

**KOH**is a

*base*.

This is an **acid-base** reaction (neutralization): **H _{2}SO_{3}** is an