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Homework Help: Tricky Question

  1. Apr 27, 2007 #1
    1. The problem statement, all variables and given/known data

    For the chemical reaction AB+C=AC+B establish the principle of conservation of linear momentum.

    2. Relevant equations

    3. The attempt at a solution

    I am totally stuck.Please help a little so that I can proceed further.
  2. jcsd
  3. Apr 27, 2007 #2
    Going by the collision theory, each of the reactant molecules must have sufficient kinetic energy and must collide in the correct orientation for the reaction to proceed, so when the collisions take place, linear momentum is conserved.
  4. Apr 28, 2007 #3
    Ok,I understand.But,how can I show that from the expression?It is a problem that came in an exam...so,I am to proceed quantitatively.
    I do not want you to provide the solution...But,help me to develop the solution.
  5. Apr 28, 2007 #4
    I am saying that this sort of approach:

    (M_A + M_B)*V_AB + M_C*V_C = (M_A + M_C)*V_AC + M_B*V_B

    That is for the chamical reaction we may establish the conservation of linear momentum in this way.

    I hope I am correct.Please check.
  6. Apr 29, 2007 #5
    Yeah, that looks all right. The velocities are vector quantities though.
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