• Re: pH of weak base + strong base

    Updated: 2021-03-26 16:01:12
    You need the equilibrium constant for the reaction NH3 + H2O =》NH4 + + OH-If you add Hydroxide the equlibrium will pushed to the left side, ammonia gas will pushed out.I think it works like an alkaline buffer. Probably can use HH equation. In the logarithmen you have decrease of NH4+ And increase of NH3

  • pH of weak base + strong base

    Updated: 2021-03-26 14:37:48
    If we add 0.008 moles of strong base like NaOH to 1 liter of ammonia with concentration of 15.3M , what would the pH be?Now in all my years of studying chem alone, i have never encountered such problem, usually we can ignore the OH- that comes from the weak base but not in this case since its very concentrated so what is the way?NH3+H2O <----> NH4++OH-i can do an ice table for the weak base alone, i'd get the concentration of OH- alone and then the moles, and then can i just add the moles of OH- from the strong base to that and calculate new concentration and then pOH and then pH?

  • IP Chemistry – Chemical Equilibrium and Le Chatelier’s Principle

    Updated: 2021-03-16 08:55:47
    First of all, this topic on Chemical Equilibrium is not being tested for GCE O-Level Pure Chemistry (syllabus code 6092) in Singapore. It is only being tested in IP Chemistry, IGCSE Chemistry and IB Chemistry. At the end of the blog post, you will be able to answer three important questions: Q1: What is meant […]

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Feb 2021