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VRSTE TVARI

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• Indikatori kiselina i lužina su kemijski<br />

spojevi koji pokazuju različite boje u<br />

kiselim, neutralnim i lužnatim otopinama.<br />

• Najpoznatiji indikatori su:<br />

–lakmus,<br />

– metiloranž,<br />

– fenolftalein.

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