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

    2
    ReputationRep:
    Apparently if you double the mass of magnesium used in a reaction between excess HCl and magnesium, there is little effect on the rate of reaction.
    The text book says that this shows that 'an increase in the surface area of magnesium makes little difference when the acid is in so great an excess'.

    My question is why do they say increase in surface area rather than increase in mass? Is it not good enough to say mass?


    Posted from TSR Mobile
    Offline

    14
    The reaction only takes place on the surface boundary.
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by EricPiphany)
    The reaction only takes place on the surface boundary.
    Ah ok that makes sense! Thank you!


    Posted from TSR Mobile
 
 
 
  • 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
    What's your favourite Christmas sweets?
  • 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

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