• Difficult Problems in chemistry From post utme (Unilorin 2007)

    Chemistry

    Chima Sunday (Tutor)
    04-04-2016 16:56:00 +0000

    About 80% that attempted these questions got it wrong, try and see if you can be able to solve it.
    Question 7 The relative strengths of weak acids can be seen by a comparison of their.
    Option A pH value.
    Option B dissociation constants.
    Option C hydrogen ion concentrations.
    Option D molarities .
    .
    Question 3 What are the oxidation numbers of manganese in the anions Mn02 and Mn04?.
    Option A +7 & +6.
    Option B +2 & +2.
    Option C +4 & +4.
    Option D +2 & +6.



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