• AMA with Certified Student Loan Professional

    Join SDN on December 7th at 6:00 PM Eastern as we host Andrew Paulson of StudentLoanAdvice.com for an AMA webinar. He'll be answering your questions about how to best manage your student loans. Register now!

Acheiver Gchem Question

digdig

Junior Member
10+ Year Member
5+ Year Member
Jul 1, 2006
33
0
  1. Pre-Dental
    If you make a .5L solution containing .5 mol of KCL, what is the molarity of the solution?

    A. 0.1 M
    B. 0.2 M
    C. 1 M
    D. 2 M
    E. 10M

    Answer is 1 M. but i picked 2 M because of the dissociation of KCL. Can anyone tell me when we consider this. I know we take into account in boiling point and freezing point depression. but i thought it should apply here also. 0.5 mol of KCL would mean .5 mole K and .5 mole Cl. so total of 1 mole. so 1mole/.5L = 2M !!!!
    this is frustrating. any help would be greatly appreciated.
     

    KTDMD

    Membership Revoked
    Removed
    10+ Year Member
    Jan 6, 2006
    47
    0
    1. Pre-Dental
      digdig said:
      If you make a .5L solution containing .5 mol of KCL, what is the molarity of the solution?

      A. 0.1 M
      B. 0.2 M
      C. 1 M
      D. 2 M
      E. 10M

      Answer is 1 M. but i picked 2 M because of the dissociation of KCL. Can anyone tell me when we consider this. I know we take into account in boiling point and freezing point depression. but i thought it should apply here also. 0.5 mol of KCL would mean .5 mole K and .5 mole Cl. so total of 1 mole. so 1mole/.5L = 2M !!!!
      this is frustrating. any help would be greatly appreciated.

      I guess you're confused here with molarity vs molality. Try revert to your basic understanding on these two and you should find out the answer for yourself easily.
       
      About the Ads
      This thread is more than 15 years old.

      Your message may be considered spam for the following reasons:

      1. Your new thread title is very short, and likely is unhelpful.
      2. Your reply is very short and likely does not add anything to the thread.
      3. Your reply is very long and likely does not add anything to the thread.
      4. It is very likely that it does not need any further discussion and thus bumping it serves no purpose.
      5. Your message is mostly quotes or spoilers.
      6. Your reply has occurred very quickly after a previous reply and likely does not add anything to the thread.
      7. This thread is locked.