Thursday, 16 May 2013

4.1 describe the use of the indicators litmus, phenolphthalein and methyl orange to distinguish between acidic and alkaline solutions

Red litmus paper turns blue in the presence of alkali.

Blue litmus paper turns red in the presence of acid.

Phenolphthalein goes pink in alkalis.

Methyl orange is yellow for alkali, red for acid.

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14 comments:

  1. Y and S11 April 2014 at 04:15

    I know it may not come under this point in the syllabus, but it may be worth adding as a side note that Chlorine bleaches damp blue litmus paper, whilst you're on the topic of litmus paper.

    ReplyDelete
    Replies
    1. Unknown8 June 2014 at 04:37

      I think that's covered on point 2.39

      Delete
    2. Anonymous1 April 2016 at 02:33

      i think no one likes a kiss ass.

      Delete
    3. Unknown7 May 2016 at 08:22

      straight savage

      Delete
    4. Unknown20 December 2017 at 11:48

      Correction, no one likes just a straight up ass like you

      Delete
  2. Anonymous4 December 2016 at 19:55

    straight paki hahahah

    ReplyDelete
  3. Anonymous4 December 2016 at 19:56

    yo yusef u think ur big chatting shit on the biology blog too and now the chem ya annoying twat

    ReplyDelete
    Replies
    1. Unknown3 June 2017 at 09:22

      Exactly. I see this fucking Paki chatting shit on every fucking blog

      Delete
    2. Unknown22 December 2017 at 10:14

      just because hes being a dickhead doesn't mean you have the right to be a racist prick mate

      Delete
    3. Unknown31 March 2018 at 07:33

      'that's where you're wrong kiddo'

      Delete
  4. Anonymous4 February 2017 at 23:29

    BAEF

    ReplyDelete
  5. Unknown19 May 2018 at 02:49

    I came here to "revise" my chemistry, wtf are these comments?

    ReplyDelete
  6. corvoxt42 May 2019 at 07:11

    Not even safe from seeing racism on a gcse chemistry help page

    ReplyDelete

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