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    stwinklez's Avatar
    stwinklez Posts: 1, Reputation: 1
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    #1

    Apr 19, 2014, 11:07 PM
    Ph calculation
    Sir.. could you please help to answer question no. 12 chemistry paper 2012.. booklet a4
    q)which one of the following will decrease the pH of 50ml of 0.01M HCl?
    a)addition of 50ml of 0.01Mhcl
    b) addn of 50ml of 0.002M HCl
    c)addn of 150ml of 0.002M HCl
    D) addn of 5ml of 1M HCl
    e) addn of mettalic zinc... plz
    CWH68's Avatar
    CWH68 Posts: 26, Reputation: 2
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    #2

    Apr 20, 2014, 08:56 AM
    Hint: Adding any amount of a stronger concentration of HCl will lower the pH.
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