Hydrosulfuric acid is a diprotic acid for which Ka1 = 5.7 X10-8 and Ka2 = 1X10-19. Find out the concentration of sulfide ion in a 0.10 M hydrosulfuric solution.
Explain what mass of ammonium chloride must be added to 250mL of water to give a solution with pH = 4.85? Kb(NH3) = 1.8 X10-5