How to know what something is reduced or oxidised to?
So if you weren't given a full equation or products how would you know what something is reduced to oxidised to?
E.g. K2Cr2O7 is reduced to Cr3+ but if you weren't told this could you work it out?
E.g. K2Cr2O7 is reduced to Cr3+ but if you weren't told this could you work it out?
first way:
You have to recall it
orange Cr2O7 2- is reduced to green Cr3+ ions
this is a common observation that you should recall
https://www.google.com/search?q=reduction&rlz=1C1CHBD_enMU774MU774&oq=reduction&aqs=chrome..69i57j69i60l3j69i65l2.1159j0j7&sourceid=chrome&ie=UTF-8
https://www.google.com/search?q=oxidation&rlz=1C1CHBD_enMU774MU774&oq=oxidation&aqs=chrome..69i57j69i61j69i60j69i65j69i61l2.1023j0j9&sourceid=chrome&ie=UTF-8
other way:
compare standard electrode reduction potentials to find which reactions are feasible
You have to recall it
orange Cr2O7 2- is reduced to green Cr3+ ions
this is a common observation that you should recall
https://www.google.com/search?q=reduction&rlz=1C1CHBD_enMU774MU774&oq=reduction&aqs=chrome..69i57j69i60l3j69i65l2.1159j0j7&sourceid=chrome&ie=UTF-8
https://www.google.com/search?q=oxidation&rlz=1C1CHBD_enMU774MU774&oq=oxidation&aqs=chrome..69i57j69i61j69i60j69i65j69i61l2.1023j0j9&sourceid=chrome&ie=UTF-8
other way:
compare standard electrode reduction potentials to find which reactions are feasible
(edited 5 years ago)
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