Tuesday, 7 May 2013

2.25 describe the reactions of dilute hydrochloric and dilute sulfuric acids with magnesium, aluminium, zinc and iron

acid + metal > salt + hydrogen

For example:
magnesium + hydrochloric acid > magnesium chloride + Hydrogen
Mg + 2HCl > MgCl2 + H2

11 comments:

  1. Thank you so much! I've got my mock triple awards IGCSE's and this has helped me so much! I was wondering what made you start your blogs (i also use your bio and physics ones) x

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    1. Its no problem! Well at first it was mainly because I thought it would be a good way for me to revise- by writing out notes- but then I also realised this would be a good opportunity to do the things I wish other people did with their resources: like tagging all the work; doing every point on the spec; make it look pretty ;) Infact I nearly stopped doing it half way through, but I got such lovely responses (like this one!) that I started doing it for the people who it was helping out! x

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  2. thank you so much, this is unreal!

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  4. this is a redox reaction between a metal and a non metal and since its asking for a description i think it is better to say:
    the metal is oxidised, forming a positive ion
    &
    the hydrogen in the acid is reduced, forming the element hydrogen as a gas
    &
    the reaction between an acid and a metal forms hydrogen gas and a ionic salt compound

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  5. A good way to remember this is MASH (Metal + Acid --> Salt + Hydrogen)

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  7. I was 12 when you started this and now I'm using it for my revision. Unbelievable.

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