Very strong acids, such as HNO 3 and HCl, appear to be equally strong in water. O is a base than the conjugate bases of HNO 3 and HCl. O is a weaker base than the conjugate bases of HNO 3 and HCl. A 4.65 g sample of solid NH 4 HS is placed in an evacuated 3.0 L flask at 35 C and allowed to reach equilibrium at which time the total pressure in the flask is 0.82 atm. Ten amperes are passed through molten aluminum chloride for 5.5 hours.
Acid is added.
PbO 2 is added. The pH is increased. Sulfide ion is added.