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Monday, April 12, 2010
alkalines~

hello again. :D
this is a continuation of acids, the previous post.
keep on reading and tagging! :D

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alkalines ; properties

> they are bitter
> they have a soapy feel
> they turn red litmus paper blue

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uses of alkalines;

> ammonia solution : fertilisers
>sodium lydroxide : soaps & alternatives
> calcium hydroxide or lime water : reduce acidity of soil in agriculture

* neutralisaton – mixing acids and alkalines

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important equation ;

Acid + Alkali = Salt + Water

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indicators :

* red & blue litmus paper
* methyl orange ; test for acids
* phenolpthalein ; test for alkalines
* universal indicator

it turns red in PH range of 0 – 3

it turns yellow in PH range of 4 – 14

it turns colourless in PH range of 1 – 9

it turns red in PH range of 10 – 14

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done by : qihui and julia :D
edited by : syak :D


~ { 2:34 AM }
DOMO-KUN is <3