2H+2H2O gives 2KOH+H2
"Potassium hydroxide hydrogen" is meaningless.
HCl + MgOH -> MgCl + H2O Hydrochloric acid and magnesium hydroxide yields magnesium chloride and water.
pottasium bisulfate((HSO4)1-) K+ + (HSO4)1- yields KHSO4
magnesium hydroxide
H2O, water
no
4KClO3= 3KClO4+KCl
KOH + HCl → H2O + KCl Potassium hydroxide will react with hydrochlric acid to produce an insoluble precipitate, potassium chloride, as well as water. This is a strongly exothermic reaction.
Silver nitrate plus potassium iodide yields silver iodide plus potassium nitrate.
An aqueous hydrogen nitrate is simply hydrogen and nitrate ions dissolved in a solvent such as water and become dissociated. So a formula for this would be something like HNO3 (yields) H+ + NO3- . where the H+ and the NO3- are your two dissociated ions.
3H2 + N2 yields 2NH3
HNO3 + KCl = KNO3 + HCl