Sunday, 21 April 2013

1.35 understand the relationship between ionic charge and the melting point and boiling point of an ionic compound

The bigger the difference in charge, the stronger the attraction: if you have + and - ions they will have a weaker bond than +3 and -3 ions. The stronger the attraction, the harder it is to break the bonds, this means that the melting and boiling points will be higher. So the bigger the charge of an ion, the higher the melting and boiling point.
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18 comments:

  1. NM30 May 2013 at 02:30

    Thank you! You've been incredibly helpful - I've been using your biology blog too :)

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  2. Marwan9 June 2013 at 02:17

    I don't know where to contact you and tell you that YOU ARE AMAZING!! You must feel very proud!

    I have my chem exam tomorrow and I have no idea about anything in chemistry. Hopefully your blog will help me go through the syllabus nicely. Thanks a ton!

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    1. HannahHelp11 June 2013 at 05:06

      Hehe, thanks! I did my chem then too! Hope it did help :)

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  3. Unknown7 January 2014 at 08:12

    shouldn't it be + and - ions not atoms and the same for the +3 and -3? :)

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  4. Rani Davis18 May 2014 at 05:31

    This blog is so helpful, thank you! x

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  5. Unknown9 June 2014 at 07:48

    GOD GOOD WHERE HAVE YOU BEEN!!!

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  6. Anonymous27 February 2015 at 22:57

    holy cow. i found heaven. on a website. THANK U SO MUCH FOR THIS

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  7. Unknown31 May 2015 at 04:36

    Dear Hannah,

    Thank you so much for creating this blog. It has really helped me strive for my A*s in my IGCSE. You are truly amazing. Thank you once again.

    Regards,
    Terren

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    1. HannahHelp17 June 2015 at 15:19

      Terren! Thank you for your comment :) I really hope you get the grades you want, good luck!

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  8. SerMinerva7 June 2015 at 06:04

    I'm kinda confused. I thought that having a greater charge and stronger electrostatic attraction was something that would increase the intramolecular forces but not have an effect on the intermolecular forces (i.e. make it more difficult for an ionic compound to react, but wouldn't have an effect on it's boiling point/freezing point because it doesn't affect the forces between the molecules.) I'm probably wrong but I'd like clarification

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    1. HannahHelp17 June 2015 at 15:29

      The strength of charge definitely has an effect on the melting/boiling/freezing point of a molecule. I think the confusion might be in your definition of inter and intra molecular: intramolecular is within the ionic compound, so what the ions are doing to each other. Intermolecular would how this ionic compound related to another one.
      I can't really remember how to do chemistry any more hahaha, but I hope that cleared things up at least a little.

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  9. Unknown7 June 2015 at 06:45

    This comment has been removed by a blog administrator.

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  10. Unknown3 February 2016 at 04:42

    I'm sure you're aware of how AMAZINGLY WONDERFUL this blog/you are. But i'm gonna tell you one more time. Thankyou so much!!

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  11. Unknown22 May 2017 at 02:29

    Hi Hannah! I just wanted to say: all your blogs have been a ~massive~ help with my revision, and on behalf of everyone who’s used your material, THANK YOU. Thank you for taking the time to help us! You’re awesome. Truly! :) xxx

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