200 ml of 1 M H2SO4, 300 ml of 3 M HCl and 100 ml of 2 M HCl are mixed and made up to 1 litre. The proton concentration in the resulting solution is ?A. 0,25 MB. 1,25 MC. 2,5 M D. 1,5 M E. 0,75 MSOLUTIONH2SO4 contains two H+ ions So 200 ml of H2SO4 contains 0,2L×1mol/L×2 = 0,4...

How many moles of NH3CI must be added to 1.5 L of 0.2 M solution of NH3 to form a buffer whose PH is 9.00 (Kb = 1.8 x 10-3) ?SOLUTIONKnown:V = 1,5 LPH = 9.00NH3 = 0,2 MKb = 1.8 x 10-3Asked: How many moles of NH3CI ?Answer:pOH = pKb + log (Csalt/Cbase)14 - pH = -log Kb +...

5. A solution contains 0.2M NH4OH and 0.2M NH4CI. If 1.0 mL of 0.001 M HCl is added to it. What will be the [OH-] of the resulting solution [Kb = 2x10-5] ?A. 2x10-5B. 2x10-3C. 5x10-10D. None of theseSOLUTIONConcentration of NH4OH = 0.2MConcentration of NH4Cl = 0.2MConcentration of HC1 = 0.001 M[Kb = 2x10-5] Applying Henderson EquationPOH = PKa +...