Answer Happy

I need a correction for the wrong ones please
Which of the following compounds is insoluble in water? A) potassium sulfate B) sodium phosphate C) iron (II) sulfide D) barium hydroxide 2. Which of the following compound is soluble in water? A) silver nitrate B) silver chloride C) calcium phosphate D) aluminum hydroxide 3. Select the classification for the following reaction: K(s) + H2O(l) → KOH(aq) + H2(g) A) combination B) single displacement C) double displacement D) combustion Select the classification for the following reaction: NaOH(aq) + Pb(NO3)2(aq) → Pb(OH)2(s) + NaNO3(aq) A) combination B) single displacement C) double displacement D) decomposition Select the classification for the following reaction: H2SO4 + 2NH4OH → (NH4)2SO4 +2H2O A) combustion B) precipitation C) gas evolution D) acid-base neutralization