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.

chemguide

12 comments:

  1. 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.

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    Replies
    1. I think that's covered on point 2.39

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    2. i think no one likes a kiss ass.

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

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

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

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

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    3. 'that's where you're wrong kiddo'

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

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