Kimyo fanidan laboratoriya mashg’ulotlari

3-tajriba. Reaksiya tezligiga katalizatorning ta`siri.

Ikkita probirka olib, 3 ml dan vodorod peroksid eritmasidan quying. Gaz ajralib chiqish tezligiga e`tibor bering. Probirkalardan biriga pichoq uchiga ozgina marganets (IV) oksid MnO<sub>2</sub> quying. Nima kuzatiladi.? Reaksiya tezligiga katalizatorning ta`siri to’g’risida hulosa chiqaring.

4- tajriba. Sirt yuzasining reaksiya tezligiga ta`siri.

Ikkita probirka olib va har biriga 5-6 ml. dan 10% eritmasidan quying. Birinchi probirkaga no’hatdak keladigan marmar bilakchasidan, ikkinchisiga esa marmar -CaCO₃ kukunidan bir chimdim tashlang. Probirkadagi reaksiya tezliklarini taqqoslang. Sirt yuzasining reaksiya tezligiga ta`siri haqida hulosa chiqaring. Reaksiya tenglamasini yozing.

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________