Write the equation of the reaction between solutions of hydrogen sulfide and potassium hydroxide.

Write the equation of the reaction between solutions of hydrogen sulfide and potassium hydroxide. Write for it the complete and abbreviated ion-molecular equations.

1) Hydrogen sulfide, when dissolved in water, forms dibasic hydrosulfuric acid. when an acid interacts with an insufficient amount of alkali, an acid salt is formed – potassium hydrosulfide:

H2S + KOH = KHS + H2O

2 H ^ (+) + S ^ (2-) + K ^ (+) + OH ^ (-) = K ^ (+) + HS ^ (-) + H2O

2 H ^ (+) + S ^ (2-) + OH ^ (-) = HS ^ (-) + H2O

2) With an excess of alkali, an average salt is formed – potassium sulfide:

H2S + 2 KOH = K2S + 2 H2O

2 H ^ (+) + S ^ (2-) + 2 К ^ (+) + 2OH ^ (-) = 2 К ^ (+) + S ^ (2-) + 2 H2O

2 H ^ (+) + 2 OH ^ (-) = 2 H2O

H ^ (+) + OH ^ (-) = H2O