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KARBOKSYLSYRER

KARBOKSYLSYRER. SVAKE SYRER. …gir sur smak og gjør maten holdbar. Kjennetegn: COOH -gruppe. METANSYRE ( maursyre ) H COOH Ett C -atom. ETANSYRE ( eddiksyre ) C 2 H 3 COOH. PROPANSYRE C 2 H 5 COOH. EGENSKAPER FOR SYRER. PH- verdi lavere enn 7. Smaker surt.

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KARBOKSYLSYRER

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  1. KARBOKSYLSYRER SVAKE SYRER

  2. …gir sur smak og gjør maten holdbar

  3. Kjennetegn: COOH-gruppe • METANSYRE ( maursyre ) • HCOOH • Ett C -atom

  4. ETANSYRE ( eddiksyre ) • C2H3COOH

  5. PROPANSYRE • C2H5COOH

  6. EGENSKAPER FOR SYRER • PH- verdi lavere enn 7

  7. Smaker surt

  8. Forandrer fargen på en indikator

  9. Danner CO2 ved reaksjon med natron eller kalkstein

  10. Danner hydrogengass sammen med et uedelt metall som Zink

  11. Motvirker en basesyrer og baser nøytraliserer hverandre • H3O˖ + OH- → 2H2O

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