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one gchem question from achiever

Discussion in 'DAT Discussions' started by Keroro, Aug 9, 2006.

  1. Keroro

    Keroro Member
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    How many milliliters of 0.05 M HCl are required to turn 20 ml of 0.05 M KOH into a solution of pH 2.00?



    A. 10
    B. 15
    C. 20
    D. 25
    E. 30
     
  2. marylanddds

    marylanddds Junior Member
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    its a 2 step process. the answer is explained on acheiver. first neutralize, then make ph = 2
     
  3. OP
    OP
    Keroro

    Keroro Member
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    (0.05M HCl ) x (x ml) = (0.01M HCl) x (40+x)


    x = 10 ?
     
  4. tom_servo_dds

    tom_servo_dds Senior Member
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  5. tom_servo_dds

    tom_servo_dds Senior Member
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    10 + the 20 that you added to neutralize = 30.
     

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