Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    0
    ReputationRep:
    I've
    • Done four reactions at different temperatures
    • calcualted the inital rate of reaction at each temperature
    • substituted this into the rate equation to calcualte the rate constant
    • plotted a graph of 1/T against ln(rate constant)
    • Drawn a straight line of best fit and calculated the gradient
    • Put the gradient equal to -Ea/R
    • Converted Ea from J to KJ
    Offline

    11
    ReputationRep:
    (Original post by misfit1993)
    I've
    • Done four reactions at different temperatures
    • calcualted the inital rate of reaction at each temperature
    • substituted this into the rate equation to calcualte the rate constant
    • plotted a graph of 1/T against ln(rate constant)
    • Drawn a straight line of best fit and calculated the gradient
    • Put the gradient equal to -Ea/R
    • Converted Ea from J to KJ
    i think you meant you plotted ln(rate constant) against 1/T
    Arrhenius eqn is k = Aexp(-E/RT)
    so ln k = ln(A) - (E/R)(1/T)
    y = mx + c
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Has a teacher ever helped you cheat?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Write a reply...
    Reply
    Hide
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.