Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    12
    ReputationRep:
    Hi,

    Can someone please help me on this question? I have done part a) and most of part b) correctly but was unsure on how to answer the the last bit of part b) where it says "Sometimes the mass spectrum... occurrence of this peak". Can someone please explain how to answer this bit? Unsure on what the mark scheme means as well...

    Thanks!
    Attached Images
     
    Offline

    3
    ReputationRep:
    I do A-level chem n I've never seen anything like this wtf.
    Offline

    3
    ReputationRep:
    I think the answer is that a few of the krypton atoms will be ionised twice, meaning they will be 2+ ions rather than 1+ ions. This will double the speed of these ions and therefore halve the time taken for them to reach the detector, resulting in the mass/charge ratio of the 2+ ions being half that of the 1+ ions. Hope this makes sense 😊
    • Thread Starter
    Offline

    12
    ReputationRep:
    (Original post by eav_3508)
    I think the answer is that a few of the krypton atoms will be ionised twice, meaning they will be 2+ ions rather than 1+ ions. This will double the speed of these ions and therefore halve the time taken for them to reach the detector, resulting in the mass/charge ratio of the 2+ ions being half that of the 1+ ions. Hope this makes sense 😊
    Hi,

    Yeah that makes perfect sense! Thanks so much!
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: February 5, 2018
Poll
Do you agree with the proposed ban on plastic straws and cotton buds?

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.