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Lab 6
Oxidation-Reduction Reactions
| Question | Answer |
|---|---|
| Fe can lose 2 or 3 electrons forming | Ferrous ion, Ferric ion |
| Listing of elements in order of how easily they lose electrons | Activity series |
| Elements that lose electrons very readily are | High in activity |
| Elements that lose electrons less readily are | lower in activity |
| Platinum and gold are | very low in activity |
| Zn + Cu^+2 ----> | Zn^+2 + Cu |
| Zn + CuSO4 ------> | ZnSO4 + Cu |
| Zn + Cu(NO3)2 ------> | Zn(NO3)2 + Cu |
| Unbalanced equation Li + Mg(NO3)2 ---> LiNO3 + Mg (fix it) | 2Li + Mg(NO3)2--->2LiNO3 + Mg |
| Hydrogen Ions combining with two electrons form the diatomic molecule H2 | 2H^(+) + 2e^(-) ---> H2 |
| If a metal is higher in activity than H+/H2 it will transfer electrons of two H+ ions to produce H2 | gas |
| If a metal loses two electrons to become a +2ion, then | M ----> M^(+2) + 2e^(-) |
| M + 2HCI ----> | MCI2 + H2 |
| M + HCI ----> MCI3 + H2 | 2M + 6HCI ----> 2MCI3 + 3H2 |
| Metal in HCI, if there is a reaction then what happens ____ and if there is no reaction the metal is low in activity | There are bubbles |
| Cu when oxidized is | Cu^+2 |
| Zn when oxidized is | Zn^+2 |
| Mg when oxidized is | Mg^+2 |
| Fe when oxidized is | Fe^+2 |
| Al when oxidized is | Al^+3 |
| If the metal is giving electrons to the acid Hs is the product | gas |
| water takes | iron electrons |
| rust reacts with | water |
| Reactive, lose 1 electrons, Alkali | Group 1 |
| reactive, but less, lose 2 electrons | Group 2 |
| not reactive, Al and Ca will ionize, forms covalent compounds | Group 3 |
| reactivity varies by element, Ionization unpredictable, metals have several changes | Transition metals |
| Metals more active than H+ | Mg, Zn, Al |
| Metals less active than H+ | Cu |
| Would regular steel (iron) pipes be suitable for transporting acidic solution? | -no -dissolved -contaminate |
| What problems might result from cooking acidic foods in aluminum cookware? | -reactive to acid -leave traces of aluminum in food |
| Which metal has higher activity? Chromium or cobalt? | Chromium |
| Organize from most to least active Co, Mn, Cr | Manganese, Chromium, Cobalt |
| Which is higher in activity silver or gold? | Silver |
| Which metal is higher in activity silver or platinum? | Silver |
| Which is higher Pt or Au? | Gold |
| Organize from most active to least | Silver, Platinum, Gold |
Created by:
edith1234
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